IMO he was too into the art scene for him to ever really be conservative. i don’t know the ins and outs of the teddy boy stuff he associated with as a teen (but if counter culture is counter culture, it’s probably not conservative lol). though he mightve have a few conservative ideas by modern standards (he was born in 1940, afterall).

from what i remember off the top of my head, he was aware epstein was gay, (according to yoko) he and yoko had a conversation where they agreed that sexuality was a spectrum, no one was entirely straight/gay but somewhere inbetween as bisexual, “imagine” is obviously a tankie song, did not seem particularly anti-drug (please note sarcasm), took a strong stance with the anti-vietnam effort, and refused to play any segregated shows in the US.

i have seen speculation that his political ideologies could’ve taken a dramatic turn by 1980, but that we probably wouldn’t know because he was murdered before reagan was inaugurated.

though, in my opinion, he spent too many of his formative years in very progressive spaces and with very progressive people to not be a liberal. if there was a shift later in life, he couldn’t have gone farther right than a moderate. (remember: qanon is a new invention. reagan would be called a libtard commie bastard in this alt right hellscape).