Since the beginning of I want you (She's so heavy) of The Beatles, two beautiful guitar lines have been recognized. A baroque circular arpeggio that becomes almost hypnotic, and a blues melody that accompanies (sometimes notes by note) the voice of John Lennon in the strophes. This guitar melody is also performed as a solo, without the singing voice.
I imagine the four Beatles playing this song with their respective instruments (of course I'm wrong, the song is a studio and perfectly John can play all the instruments by himself). There is no doubt about the voice (John), the drums (Ringo) and the bass (a very inspired Paul). The synthesizer, very hippie, by the way, I do not know who interprets it.
My question is about the guitar, because I would like to put a face to each interpreter. Who plays the lead guitar (ie, strophe melody and solo) in this incredible song, George or John?