I too love wonderwall, but george doesn't play on it at all, in fact he was only the arranger and some of that was done when he was out of the country.
i do beleive that george did some production work on it, but not very much, i have read that it was a group called the remo four who actually recorded the album.
the same can be said for paul's orchestrated albums, he wrote the music but he didnt produce or perform any of it.
since i am saying all this, i might as well throw the 3 ono/ lennon experimentals in too, they were yoko with john assisting, i feel that two virgins, life with the lions and wedding album were all yoko's idea and john just went along with her.
i don't have a lot to say about george's electronic sound, but it too belongs in this catagory, it is unlistenable unless your looking at the stars, pretending its a planetarium.
one last throw, the fireman, i beleive whole heartedly that youth is the mastermind behind the two albums, plus the liverpool sound collage credited to paul and the small furry animals, plus the new fireman album coming out this summer.
this is all just my opinion, i would love to hear other people's takes on this subject. :-/