Deep Rock Galactic - great co-op PvE with a lot of surprising depth and cool procedural generation of levels, some really great challenges
Hunt: Showdown - intense PvPvE with fantastic gunplay in a well-drawn, period-accurate Lovecraftian setting
Phasmophobia - ghost hunting co-op with enough randomness and variety to stay spooky over hundreds of hours
I like co-op. What can I say?