Mountain Thyme got most of mine, including my personal favorites, Bill and Earl Bolick, The Blue Sky Boys. Slight subject slip here ~~ Bill Bolick is still alive, Earl died earlier this year. Hard to believe that they were just teenagers when they did those first recordings in 1936!
I'll have to go some to even approach that list without duplications, so for now, I'll just have to add a couple of family groups of more recent vintage, Nova Scotia's The Rankin Family and The Ennis Sisters from Newfoundland. Lamentably, The Rankin Family recently called it quits ~~ I think their last concert is scheduled for early next month. Raylene, Cookie, and Heather do have a series of Christmas Concerts with Symphonies planned, so you Canadians catch them while you still can.