Only Rocket League is over 1000, League of Legends would probably be over 1000 too and CS 1.6 SHOULD be but Steam says 400 which is hard to believe.

Over 400: Crusader Kings III and Leaf Blower Revolution (obviously that just ran in the background a lot without interaction…), CS 1.6

Over 200: Black Ops III Zombies, Skyrim, GTA V, Nioh, Nioh 2, Monster Hunter World