To elaborate further on grand strategy games, pretty much all Paradox games can be played… sort of cooperatively?

Generally the maps are large enough that you can kind of just pick your corners and only rarely interact.

In a single game of Europa Universalis 4 one player might conquer all of Asia, while another consolidates Europe and a third player is in Africa. You can’t generally actually disable PvP, you can just not go to war. Same is true for Crusader Kings 2/3, and Stellaris. You can coexist and mutually stay out of each others way while possibly helping each other out.

Also, I’d add some of the survival crafting/sandbox titles to the list of stuff you can play cooperatively. They don’t all work for it, but some of them are definitely friendly to a coop group play style. 7 Days To Die works brilliantly like that, though it will be absolutely trivial with multiple players unless you turn the difficulty up. Ark: Survival Evolved can be pretty fun coop (especially with the Primal Fear mod- you will need friends.)