As much as I love Elvis, I'd go with the Beatles.
Elvis had a singular talent for singing, dancing, and being a heart throb.
The Beatles had those as well, with talents for writing, philosophy, longevity and evolution of style in addition.
Elvis revolutionized by bringing rockabilly and gospel to the national stage, but the Beatles blew the music scene to smithereens, and seeped into the national conversation on all fronts, philosophical, political, fashion-wise, etc.
All Redd [Foxx] did all day was coke, grass and ****. . .
So our first network taping, name in big letters right on the set, Redd doesn't arrive at curtain call.
I go back to his dressing room, all I see is the girl doing his hair is sitting on him.
So I see her body, her dress, and his legs.
I say, Redd, don't you know we're on camera?
Redd sticks his head up from between the hairdresser's legs and asks indignantly. . .
"Can't a man relax?"
- Bob Einstein