Thanks for that Joe and #, I can definitely hear the resemblance.
Here's a few other versions of the tune which for me helped bridge the gap between Norman Blake's version and the Fred Jenkins version. The list of Spanish Fandango-named versions isn't exhaustive.
1925 - Smith & Algood (Okeh 45010-A) - Spanish and American Fandango 1927 - Fred Jenkins (Gennett 6187-B) - Babtist Shout 1938 - Pete Steele (Library of Congress) - Spanish Fandango 1957 - Oren Jenkins* (American Banjo Tunes & Songs In Scruggs Style, Folkways Records FA 2314) - Spanish Fan Dango 1962 - Art Rosenbaum (Folk Banjo Styles, Elektra EKL-217) - Spanish Fandango 1962 - Snuffy Jenkins (Carolina Bluegrass, Folk-Lyric FL 123) - Spanish Fandango 1964 - Winnie Winston (Old Time Banjo Project, Elektra ?EKL-276) - Spanish Fandango (no link but her version is reportedly similar to Oren's) 1966 - Lena Hughes (Oldtime Fiddling And Other Folk Music - 1966, Century Records 25425) - Spanish Fandango 1966 - Dock Boggs (Dock Boggs 1966, Field Recorders' Collective FRC312) - Spanish Fandango** 1970 - Nitty Gritty Dirt Band (Uncle Charlie & His Dog Teddy, Liberty LST-7642) - Uncle Charlie Interview #2 / Spanish Fandango 1972 - Norman Blake (Home In Sulphur Springs, Rounder Records 0012) - Spanish Fandango 1972 - A. J. Morris, Sr.(The Rackensack, Volume I, Rackensack Records LP 278) - Spanish Fandango 1973 - Pete Stanley & Roger Knowles ("Banjo Bounce", XTRA 1134) - Spanish Fandango 1972 - Roger Nicholson (The Gentle Sound Of The Dulcimer, Argo ZDA 204) - Spanish Fandango 1975 - Stacy Phillips (All Old Friends, Revonah Records RS-930) - Spanish Fandango 1986 - The Lazy Aces (Still Lazy After All These Years, Marimac Recordings 9008) - Spanish Fandango 1986 - Steve Garcia With Matt Levine (Marimac Recordings 9004) - Spanish Fandango 1991 - Doug Phillips and Roger Howell (Blue Ridge Mountain Music, Ivy Creek Recordings ICR 101) - Spanish Fandango 1991 - Etta Baker (One-Dime Blues, ROUNDER CD 2112) - Spanish Fandango 1992 - Dr. Horsehair's Old-Time Minstrels [Bob Flesher] (Old-Time Clawhammer Banjo, NOT ON LABEL) - Spanish Fandango (modern recording)
(A fuller list can be seen here under "Spanish Fandango #1")
* (no relation to Frank Jenkins, but nephew of Snuffy Jenkins ** some collections call this either Banjo Chimes or Coke Oven March rather than the proper name
I'll have to investigate a few more of the fandangos listed on this page too to see if I hear any similarities.