I was a small kid in the 90's, but a lot of the PC culture of the 90's did hang around into the first half of the 2000's.
Granted, this is from the mind of a small kid, so I'm mostly going to be bringing up stuff like kids' shows and the like.
Most of the PC culture of the 90's was just politeness, sappy PSA's, and diversity via tokenism like the Burger King Kids Club or kids shows like The Puzzle Place and Captain Planet.
But the token diversity of the Burger King Kids Club and similar kids cartoons was different from the woke forced diversity of today, with blackwashing, ugly gender blobs, and utterly unlikable "strong wahmmen" of 2010's pop culture.
Like, the white males weren't portrayed as inferior to the minorities and females, with the noted exception of Captain Planet, which was pretty mild compared to the stuff you see today.
They were all on a mostly equal footing and sometimes you'd have the white guy be the leader of the group, but it was mostly a coincidental thing.
Looking back on the media, especially the more ephemeral stuff like commercials and old sites or archived news articles and footage, the PC culture was mostly just "don't be an asshole" more than anything else.
Like, gay rights wasn't a new thing per se, but normies viewing it as a legit movement was very much a new thing.
Gay jokes were still very much a thing in pop culture, and teenagers often used gay as an insult all throughout the 90's and 2000's, but true and honest full-on homophobia and gay bashing was condemned, especially after Matthew Shepard got killed.
"Casual homophobia" of jokes and ribbing was acceptable, but was also kind of seen as childish and immature as you got older, especially as the 90's gave way to the 2000's. Like, it was okay and expected if you were a kid or a teen, or even in your early 20's in some areas.
But once you hit your late 20's/early 30's, being openly homophobic was seen as pathetic unless you were an outright redneck or hood rat. Everyone had a more "none of my business/you do you" mentality for most of the 90's and 2000's, barring the fundies or fringe groups like the lefty proto-SJW's and OG Antifa punks or Neo-Nazis and Militia spergs.
Actual homophobia involving physical violence or threats was a huge no-no even back then.