i have a pretty good GPU now.
besides crysis, what old games can i go back and play on ultra-super-max settings and would still give my GPU a good workout?
or what games looked really good on ultra at the time but struggled to deliver fps, and would now be a joke for a modern high end GPU?
In addition to all the suggestions - check out modding databases like nexusmods or whatever. Many older games that would not fit your definition have graphical mods that will make your GPU work.
Personally I’ve played modded stalker, fallout, elder scrolls. Hell, you can make Minecraft look absolutely amazing, but it’s a pain to set up properly. You’ve mentioned you’re not into horror games, some games also have total conversions available that do a some genre bending too.
Cyberpunk is not that old, but it’s one of the best looking games ever made IMHO.
Witcher 3, also potentially with mods.