I have fond memories of watching TV as a child. Among the things I liked to watch were Elvis Presley movies. They were formulaic and predictable, but Elvis had a beautiful, baritone singing voice and some of the songs were actually exciting rock'n'roll classics. (As a very young child, 'formulaic and predictable' was comforting and comfortable; it only got boring as I grew up).
Elvis' primary media for music distribution were singles and films, rather than albums. Hence the chosen alum is
Elvis Presley - Elvis 30 #1 Hits
I think it is worth remembering the limits of Elvis' contribution to his own music. He was a singer and, arguably, an actor. He never wrote any of the words or tunes that he delivered to his audience. He was not responsible for the sexual ambiguity of Jailhouse Rock, the social observation of In the Ghetto, etc. He needed someone to organise such things on his behalf.