I’ve noticed in a lot of Beatles albums, where one of them may generally perform better on the album than the other 3, one of those other 3 will have a stand out song on the album.
To try and explain my point, take a look at Abbey Road. I don’t think it’s a very controversial take that generally Paul or George performs the best on that album, the whole medley makes the album which was Paul’s idea and George’s best work with the group is on that album, however John’s songs stand out among the rest. While what I said is still true, you could just as easily argue that Come Together, I Want You or even Because are the best songs on that album.
It’s the same with Sgt Pepper’s, the whole album is Paul’s first masterpiece but in my opinion Lucy In The Sky and specifically John’s parts in A Day In The Life are the standouts, or on the white album where Paul and John are more or less equal yet out of George’s songs two of them (Piggies and Savoy Truffle) are arguably the more forgettable songs on the album, While My Guitar Gently Weeps could easily be argued is the best song on that album. Even some of their earlier albums like A Hard Day’s Night or Help! where John almost definitely has the general better songs, most people will come away remembering And I Love Her or Yesterday, both Paul songs.
I think on the albums I haven’t mentioned all the main songwriters (sorry Ringo) perform at a similar level to each other so it’s not really worth mentioning, but if anyone has any other examples I’d like to hear