I would suggest adding Jimmy Nichol (drums on Australian tour while Ringo had tonsillitis) an Billy Preston (as close as you could get to a fifth member of the band in 1969-70 during the "Let It Be" sessions). But how to frame it? They were a part of the live band, and I don't think that can be said for anyone else, so maybe can still be considered "part of a band called The Beatles" without opening it up to anyone who played in a recording session. Though Andy White (drummer during the recording of 'Love Me Do') would be another good one. I'll stop now.
As someone who saw The Beatles live in 1961 at 'The Cavern Club' in Liverpool, I can say how I regret not getting all the autographs and photos and memorabilia I could have if I'd only known how famous they were to become ......... gnashing of teeth and moaning.
I can never remember Paul's last name. I can picture him in my mind, but his last name always escapes me (even right now, I just looked at it, and can't remember it). Starr, however, is not so easily forgotten.
Ringo takes a lot of grief for not being as spectacular as the other three, but if you dig up some of the early recordings with Pete Best, the band sounds totally different (and much worse). Ringo may not have written any of the classics, but he was and is a dutiful and capable drummer. He basically gets ripped on for being the least remarkable guy on the all-star team. He's still an all-star though...band reference unintended.
Well Paul actually died and got replaced by a look alike you have to remember. So whatever that guys name is, if we ever find his true identity, should be added to this list.
How ironic.