OK, I'll throw out a few names from the 75-81 era (I was never there, but had a family member there at that time, and visited frequently)
Russ Kurzan (there were two Kurzan brothers, one (not Russ, but the other, his name escapes me) was a bit of inventor, and came up with the design of the fold-out phonograph in the Rutherford days)
Jim Cleaver
Ed Reny (worked on elevators)
Reinhart Lengtat (I think he left the org in the 1980 purge, he was a scholar and had written some of the literature - not sure which books)
Joe Brown ( an artist who did some of the murals and paintings around bethel and much of the artwork in the 80's)
That's all I can think of right now