Has anyone ever tried to type the Beatles? Here's my guess, feel free to dispute it.
John- tough one, INFP perhaps? He seemed to have thinking and judging preferences at times so it's hard to tell.
Paul- Spokesman/Perfectionist, ENTJ? It's tough to tell if he is an N or an S, he can be really creative but conventional also. His songs tend to be Stories, whereas John's seem to be personal. I also wouldn't be suprised if he was a F.
George- Very Spiritual. At a guess I'd say INTP but it's tough to tell. He was dedicated to playing the guitar, but it's hard to say whether he was a P or a J. His somewhat cynical nature makes me think he was more T like.
Ringo- Another E I think. An ESTP just loved doing what he did. I always felt he was a bit intimidated by the others.