Chewbaccer
Illustrious Potentate
The thing with Elvis is it was more than just his singing, which was very good to be honest but he had what none of those others you mentioned had, incredible appeal with the young ladies, I guess Jerry Lee did but that's another thread entirely...
Jerry Lee was probably the wildest one of the bunch and somehow, he's outlived them all. His personal life aside, I do love his music.