Lots I just don't get, am indifferent to, or actively dislike.
Oasis are in the latter category. They were unavoidable here in the UK back in the 90s, and for me utterly insufferable. Everytime you turned the radio on, the TV, everywhere. The whole "Brit-pop" thing was excrutiating.
Don't get - Springsteen; yep, don't get it at all, and I've tried. I did some promoting work for a band in the early 2000s, and their manager for some reason, made it his life's work to convert me. Everytime we met he would go on and on, waxing lyrical over some album or other. I did try to get it, but nope, not happening. At one point he questioned my sanity. I think in the end his pathological need to get me to like Springsteen had the opposite effect. Bizarre individual.
One band I didn't get at the time but became appreciative of after the fact was The Clash. Never a Punk fan as such, but there was something about The Clash that resonated with me, especially the songs Mick Jones penned.
Love Crosby Stills & Nash (& Young) but there's a fly in the ointment there in the form of Graham Nash. Don't get him, and I understand what an integral part of the CSN machine he was, but could never take to him. Crosby and Stills were the better writers for m personally.