Still not in the Rock and Roll Hall of Fame.
Racism Watch: Back in 1974, '75 I worked in the King Karol record store in Flushing, New York. Graham Central Station were in the "Soul" section; the Average White Band was in the "Rock" section. I felt that each group belonged in the other section, GCS seemed totally rock to me, and the AWB were obviously a (slavish tribute band version of a) soul band. I argued that they had been placed as they were simply based on race. Management thought that I was just being a pain in the ass.
Wasn't the first, or last, time for that last bit.
I'm pretty sure that Sly and the Family Stone were usually in the rock section, and, of course, Jimi Hendrix was always in the rock section. White people in both of those groups, and I'm sure that had something to do with it. Both acts got heavy "Top 40" radio play too, and that was very important at the time. I'm not sure that GCS got any play outside of the Big RL. Any play on WPLJ? It's possible.
Note: the Big RL was WWRL, a great New York black station, home of the "Weekend Spooktacular!" And WPLJ was the most popular early '70's FM rock station.