Here's the list so far. There may be a few in the wrong era or whatever but this is up to date as far as I can remember (I may have the odd name in my Youtube favourites - my channel is DslimHarris - that hasn't made it onto the list yet but not many) It's a lot to digest but if you have a name check the list, if you have the patience!

Early history:
                   Pipe & Tabor (Br), Richard Tarlton (Br), Much Ado About Nothing (Br), Man who played Nine Instruments (Sp), Madrid Bandola Prodigy (Sp), Calconi's Italian Musician (It), 1840's London Fiddle and Bells OMB (Br), "Band in Himself", Leavenworth OMB, Foggy Jones OMB, Charles Wallace Jacob Johnson, W.C. Williams, Raymond M, Whitby OMB, Roy Gardner, Daddy Stovepipe, Stovepipe #1, Baby Ruth, Fate Norris, George Reneau, Ernest Thompson, Walter Peterson, Henry Whitter, Charles Oaks, Tex Williams, George Daniel, M M Ware, Jim Garner, Fred Smith, Wilbur Sweatman, Vick Hyde, Virtuoso Violinsky, Paul Seminole, Slim Gaillard, Gus Cannon, Henry Thomas, Ben Curry (Bogus Ben Covington), John Henry Howard, Panhandle Pete, hurdy gurdy, stump fiddle, boombass and Benny Dougal, Albert Nelson, Gwen Foster, Chovie Hill, Buster Ezell, Smiley Burnette, Sammy Brown, Albert Bergerault (Fr), Vince "Blue" Mondi, T Marvin Hatley, Professor W.H. McMillan,

1950's
          Jesse Fuller, John "Paul" Blackman, Abner Jay, Joe Hill Louis, Dr Ross, Harmonica Frank Floyd, Man at door of Westminster Abbey (Br), Arthur Griffiths (Br), Jimmy Reed, John Lee Hooker, Sonny Boy Williamson #2 (Rice Miller), Washboard Willie, Hasil Adkins, Robert Nighthawk, Frank Frost, Willie Love, Willie Nix, Slim Harpo, Rex Champagne, Gray Montgomery, Tommy Bankhead, Lone Wolf, John Codona (Scot), Greeley Robertson, Boyd's Solo Band, Larry Bryant, George "Tom" Newman (Br), Drifting Johnny Miller, Archie Stephens, Bill Agate (Br),

1960's/70's
                Juke Boy Bonner, Wilbert Harrison, JD Short, Drifting Slim, Duster Bennett (Br), Don Partridge (Br), Rahsaan Roland Kirk, Papa Lightfoot, John Hammond, Blind Joe Hill, Joe Barrick, Ray Stubbs (Br), Chucklefoot (Br), Bert, Eddie Nash, John Schmitt, Robert "One Man" Johnson, Dan The Man The OMB (Can), Clate Cooper, Stompin' Tom Connors (Can), John Hartford, Tim Williams (Can), Leonard Solomon, Des Bader (Pol/EGer), Jim Pizza (Nor), Kenny Sorensen (Can), Schrotti (Ger), Scotty (Br), Gordon Rhymes (Br), Shaky Jake (Br), Walter Tore's Spontobeat, Bill Jenkins, Mike Griggs (Br), Jon Ware (Br), Cyril Lefevre (Fr), Johnny Magoo (Ire), Popeye, William Roof,

1980's
          Frank Runaud, Homer Henderson, Paul Moore (Br), Patrick Hazell, Mike Whellans (Scot), Buskin Chris (Ger), Gee Gee Kettel (Ger), Vic Ellis (Br), Charles Kelly, Chris Smither, Jimmy Lee Robinson, Jerry Paquette (Can), Haskel May, Sterling Magee (Satan), Jessie Mae Hemphill, Hezekiah Early, John Weston, Jimmy Jimmy (Astlia), Bernard M Snyder (Ger), Glen Nichols, Saint Tropez Pete, Moti (Isrl), Pretty Richard, Little Joe, Scottish Craig, Bill Johnson, Jim Franklin, Lindsay Porteous (Scot), Otto (Ger) & Barnelli (Ger), Slippery Mike (Peter Comber Ger), Bang On Boogie Band (Mark Hamilton Scot), Bobby Brown, Lawrence Glaister, John Greet (Astrlia), Big John, Blues Myth (Astrlia), Gerry Nelson (Astrlia), Larry from Tenn, Washboard Slim, The Straniero (It), Lightnin' Wells, Mr Boom from the Moon (Scot), Buddy OMB (Br), Michael Jerome Browne (Can), Harry Manx (Can), Pete Moser (Br), Uncle Ray, Dale Brooks, Pete McGettigan (Ire), Gerry Stanhope, Jonathan Rouveral, Jerry Klinger (Austrlia), REmy Bricka (Fr), Cyril Lefevre (Fr), Smiley Bates (Can), Oliver Vardy (Can), Don Davis, Rory Blackwell (Brit), Gerry Bole (UK), Penguin Orchestra (UK), Bad Timing Bobby (UK), Tony Ballance (Ire), Dr GoodTime (Ger), Rob Grey (UK), Bill Brookman (UK), Colonel Custard (UK), Jakes Rodrigues (UK), Miller (UK), Cat Bed George (UK), Cat Weasel (UK), Andy Graham, Alexander Zoltan (Cz), Jimmy Lynch (Br), Mississippi Mike (Nl), Ian Rich (UK), Allan Welford (UK), A Frank Willis (Can),      

1990's
         Eric Royer, Bob Log 111, Dave Harris (Can), Woody's OMB (Br), King Louie, Bo Mooney, Diane Primeau (Can), Marc Bristol, Steve White, Tampico, Benjamin Tehoval (It), Scott Hall, Big OMB, Mayor McCa (Can), Richard Johnston, Skip Jensen (Astrlia), Ben Arnold, Clyde Casey, Greg Chapman, Mak Dervo, Dr Musikus (Ger), Ed Durbrow (Jap), The Flying Dutchman, Pete Gray, Larry Horton, Pete Isaacs, Jingles OMB (Austrlia), Keith Walsh Experience, Margaret Dollrod, Jeff Masin, George McAnthony, Mysterious Asthmatic Avenger (Fr), Frank Pahl, Pug, Ron The Piper, Marty Rose, Alan Rowe (Astrlia), Roy The Amazing OMB, Rudy The OMB, Tom's OMB, Tom Todd, Bobby Welles, Joe West, Washboard Hank (Can), Band of Ones, Hubert Kern (Ger), Funny Tombow (Jap), Professor Gizmo, John Schooley, Dan The OMB (Can), Phillip Roebuck, Jeff Martin, Jord Peck, Scott Dunbar (Can), Paul Oscher, David Skunk, Johnny Lowebow, Reverend Deadeye, Caveman, Matt Kurz, David Holt, Peter Joseph Paul, Michael Pickett (Can), WC Spencer, Adolphus Bell, Bobby Joe Neely, Blues Boy Jag, Marc Twymans, Alan Gerber (Can), Pete and Andrea O'Connell (Can), Sylvain Chiasson (Can), Lonesome Organist, Bob London, Woody The OMB (Br), Orchestra Man or Dog Man (Br), Terry Givens, Rev KM Williams, Gigika (Fr), Mike Marriott, Tommy Tolleson, Professor Paddy Whack, old Walter (Ger), Olli Eitel (Ger), Hai-Co (Ger), Treffi OWB (Ger/It), Romuald Poplonyk (Pol), Nick the OMB (UK), Mick the OMB (UK), Little Billy (UK), Scots Danny (Scot), Russ Rosser, Arthur Nakane, Delta Dave, Kevin Doherty, Crazy Dave, Little JC Bovard (Fr), Phil de Glass, Urban & Urban, Halfway to Nowhere, Frank's OMB (Pol), Gypsy Carns, Tommy Gee's The Old Fashioned OMB, Pepi Rottensteiner (Aust), Seamus Professor Fulchieri,   

2000 to Present
          Nikolaj Andersen (Den), Frank Plagge (Ger), Rizorkestra, Ben Prestage, Eddie Martin (Br), Jet Martin (Celmins) (Br), Pete Yorko, Stacy Puckett, Xavier Rudd (Astlia), Guy Roel (Fr), Becky Lee & Drunkfoot, Pete Farmer, Molly Gene One Whoaman Band, Rocket Craig, Bloodshot Bill (Can), Mark Simpson, Bill Abel, Terry Harmonica Bean, 19th Street Red, John Alex Mason, Smokestack & The Foothill Fury, Red Mouth, Right On John, Rollie Tussing, One Man Banjo, Al Foul, Lonesome Joseph, Mississippi John Doude, Toothless George, Mr Bonz PMB (Fr), Chuck Violence, Haunted George, Sachtrash, Fredovitch OMB (Fr), Bram Riddlebarger, Trainwreck Washington, Ghostwriter, Esmeralda Strange, J Marinelli, Long Boy Larsen (Den), Mississippi Grover, Twang Tango, The Slow Poisoner, Stringybark McDowell, El Paso Hot Button, Guitar Fucker, Reverend Beat-Man (Switz), King Automatic, Ottoboy the OM Trash Band, Reverend J Brennan, Feeling Of Love, Urban Junior, Limbs, Uncle Butcher, Junior Disorder, Scott H Biram, Almighty Do Me A Favour, Lone Bird, Mosquito Bandito, Amazing Elephant Man, One Man Hand, Johnny Cancer, Skeeter Matthews, One Man Destruction Show, Bob Bucket, Fabulous Go Go Boy (Brzl), Tim Scanlan, Dead Elvis & His One Man Grave, O Lendario Chucrobillyman (Brzl), Via Vengeance, Claude Hay (Astrlia), Juggernaut Boy, Sheriff Perkins (Fr), Legendary Tigerman, Miss Firecracker, Rob The Throb OMB, Pigmeat's OMB, The Dad Horse Experience (Ger), Honkey Finger (Br), Dennis Hopper Choppers (Br), JJ Culpepper, Thad Sand, Eric Fingers Ray, One Man Army, Amazing OMB, Sebastopol, Only Moses, Chicken Mithyc, cdub dine, Spookyman, El Monstro, Matt Mayhem, CW Ayon, Christopher of the Wolves, Swan Walker (Can), The G Man (Can), Andy Kreischer (Can), Aaron Watson (Can), Ian Bennetts (Br), Lewis Floyd Henry (Br), Slim Sandy (Can), Chuck Berger, Rusty Steamboat, Juzzie Smith (Astrlia), Kirk Special (Astrlia), Craig Dickinson (Astrlia), Phil Edgeley (Astrlia), Made for Chickens by Robots (Astrlia), Purgatory Hill, Mr Occhio, Possessed by Paul James, Paulo Gallo (It), Nathan James, Mike Cooper (Astrlia), Adam Gussow, Jim Hibbs, Germdog, Dave Goodman (Can), Dom Flemons, Matt Southon (Astrlia), Thomas Truax, Namibian OMB, Phil Wickendon (Br), Venus Fly Trap (Fr), King Clarentz, Cigo Man Band (Crtia), Curtis Blues, George Kamikawa (Jap), Felice Pantone (It), Marcus Acuaun (It), Giorgio One Man Jazz Band (It), Claudio Montuori AMI-BUZ (It), Michele Roscica (It), George vd Muziek (It), Zar OMB (It), Kent Michael, The Blues Against Youth, Gipsy Rufina, Reeks, Bella Chicco (It), One 100% Bluez Man, Maurizio Silvestri (It), Captain Tricko, Miss-ipi (It), Slim Wild Boar, Mr Orkester (Nor), OMB from Hell (Rus), Ronan (Fr), Pedro de la Hoya (Fr), Giant Mat, Rauncher Launcher, Elvis Pummel, Slin, Phillippe Menard (Fr), Shake Em, Rocco Recycle, Sonny Mat.D, Tinqui8 (Fr), The Fly & His OM Garbage (Jap), Kraftpost, Chuck Morris OMB, Johnny Dick, DERFRANZ, The Shitworker, BluesmanX, Rotor Jambreks, Ramblin Conrad (Ger), Bud McMuffin (Fr), Horst with No Name (Ger), Ben Bonham (Br), Bandaloni (Can), Egor, Ivan Holinka (Rus), Robert Lighthouse, The Flying MinMan (Ger), Duke Special, Manyfingers, Tom Rodwell, Deltahead, Zach Parrish, John Crampton, Tyo Bazz (Fr), Ted Tanner, Jeremy Barnes, Ray "Hound Dog" Fuller, Mr Olzen, Chris Jack, Leipzig OMB (Ger), Tokyo OMB Brattman (Jap), Mark Hamilton, Mango 1Man Island, Waxwing John, Miller Wise, J Boozer, Gwyn Ashton, Tongue Tied Twin (Switz), Henry Bird-Postler, Lloyd Geisness, That 1 Guy, Winko Ljizz, Ramblin Dan, One Blind Man Band, Jeff Silvertrust, Bo Baseman, Yingchao Zhang, Catfish The Bottleman (Astlia), Mojo Webb (Astrlia), Rob Berry, JawBone, Erik Fingers Ray, mcebel, Matty G, 7 Year Old OMB, Creepy V, Santiago Tamura, Willie Vanilli, Jack Starr, King Kahn & His Lonesome Guitar, BBQ (Mark Sultan), Jeffrey Novak's OMB, Trice Garner, Nervous Norvus, Lord Vapid, Rudi Kellerer (Ger), Dr Alfred Cyril Roy (India), Sam Callow, Fabio Fedra(It), Handsome Mick OMB, Trin Tran, PoopDeFlex, The Pant Hoots, Bruno Gourdo Hot Buttered Wolf, Ming Donkey OMB, Taka-Rock & OM Heartbreakers, Brother Yusef, Mahsa Matin, Wather Vun de Palz (Ger), Iguan White (Brzl), The Big Sound of Country Music O Dead MB (It), Flora Molton, Bottleneck John (Sw), Son of Dave (Br), Steve Chmilar (Can), Bradley Boy, Chad VanGaalen (Can), TD Tunstall (Scot), Birds Are Alive (Fr), Skinny Dick Jones (Fr), RJ Gauna (Arg), Petr Ritzka (Cz), Ronan/Ronan (Fr), Dirty Rotten Scumbag (Ger), Big Brother the OMB, John Butler (Austrlia), Richard Perso (Austrlia), Rocking Enocky (Jap), Paul Burden (UK), Bo Liddley, Frankfurter & the Hot Dogs, Chad Nordhoff, Jim Keyes, Jason Ray Brown, Matt Brown, Big John Musik Country OMB, Jon Wayne, Lee McWaters, Steve Riggs, The Kid OMB, Snakebite Skinner, David Walters (Fr), Rit (Fr), Nick Nicotene (Port), Jeronimo Johnson (Port), Jiri Konvrzek (Cz), Thunders Hirotomo (Jap), Eric Wells, Evan Mitchell, Night of One Sadist, Klaus Peter Till (Ger), Shane Speal, Seasick Steve, Betsy Badwater, Daniel Norgren (Sw), Kaputano Xinxeta (Sp), Eck McCanless, Mauro Ferrarese (It), Joe Buck Yourself, Subourbon Son, Philippine OMB, Siggi Capt'n Bley (Ger), Stomping Nick (NZ), Gul, Delaney Davidson (NZ), Mysterious Tapeman (NZ), Hal Walker, Keller Williams, Petit Vodo (Fr), Stew Moss, Slate Dump, Fergus, Dale Stiles, Uncle Daddy, Wolf Boy Slim, One Man Buzz!, The Space Cookie, The Big Wireman, Trash Colapso, Congo Shock, Thee Undead, I'm Bad Like Dirty Harry, Joshua Johnson, Captain Catfeesh, Archie Stevens, Jarod Bock, Keith Bennett (Can), The Haret, Mr Nipigon (Can), Pinche Gringo, King Sickabilly, Ken Fifield (Br), Dollarbill, Tony Criss, Eric Haines, Deak Harp, Reggie Miles, Chester the OMB, Lonesome Gillette, Justin Otto, Tobias Volkamer (Ger), Fruitland Jackson, Washboard Jackson, Hoodoo Man (Can), Vince Cheney, Chad Nordhoff, Jeff Norwood, Fast Eddy Wilkinson (Br), Steakmike, Chris Kena, Rene Miller (Fr), Sleepy Eyes Nelson (Scot), Squeezebox Sam Koskela, Buddy Nutt, Honey Vizer, The Lonely One Is Me, Thee Garagekid, Gomez Mescalero, Sean Bond Goon, Lt. Slam, Marc Dobson, Diggity Dave, Porch Boogie, Peter Madcat Ruth, gets longer and longer!