Bruce Waibel played on two Gregg Allman albums - I'm no angel & Just before the bullets fly. I saw them live 4 or 5 times and Bruce absolutely killed it. In the earlier days before the Im no angel album came out, the band would come back from intermission 1 at a time, starting with the percussionist, then drummer, then bass, etc. Bruce would lay down a killer solo over the drums. He had a very laid back stage presence, but his playing was anything but.
Another huge favorite of mine is Tommy Cathy, who played for the Christian group Degarmo & Key. He is a local Memphis favorite who played with many others but during his time with D&K he played some of the best song serving lines I've ever heard. Never boring.