I am not a fan of the bouncy “ker-floing” or “flunk duu dunk fa flunk duu dunk” sound of much of the 90s Nü Metal. Edit: wait, it’s more like “Fluump da dikump ka fluump da dikump da flum. Dink dink dink donk doink dank dink. Flump da flikump, duump da dikump (some kind of staccato singing that’s more like talking) duuump gluplinldump.” Anyway, you get the idea.
Stuff like Korn or the Deftones or, adjacently, Limp Bizkit just didn’t land for me. Great for jumping up and down in mosh pits, though.
However, RATM and Tool, while not pure metal acts, IMO (RATM was a sort of rap/metal fusion, and Tool evolved into prog metal) were redeeming bands from that era.
Going into the 90s, the Big 5 Thrash bands and stuff like Suicidal Tendencies held the fort until Grunge had its day. As the decade progressed, the Big 5 thrash bands either went commercial (Metallica, to a lesser extent Megadeth), stayed the course (Slayer), or began to fade (Anthrax, Exodus).
And, of course, Maiden hit their decade long low point.
Overall, I grade the 90s a C+ for metal but RATM and Tool prop it up from being about a D grade otherwise.
For other music, RHCP had two great albums (notice I said 2, BSSM and Californication but not OHM), Nirvana, Soundgarden, Alice in Chains, 1 Pearl Jam
Album (Vs ), the Cranberries, Smashing Pumpkins, some Oasis, etc. were all music that could be enjoyed.
Lots of folky or artsy feminist stuff like Ani Di’Franco, Tori Amos, Jewel, Belly, etc, that I liked in context that I was into dating folky artsy feminist women during that era and that’s what they listened to.