Its a bit like asking which of these looks the most like Superman:
They're all "Superman" but not all of them look like the same guy except for having dark hair and a blue and red suit.
If I were to mix and match I'd say Cain looks like the Shuster Studio versions from the early forties. (top and center left.) The Byrne version ( third up from the bottom right) was influenced by Reeve. Alyn the early Shuster version. ( second down from the top left) Reeves, I dunno. He never looked like any of the comics versions to me. The other guys? Never paid enough attention.