I go by main genre - so Action, Adventure, RPG, ARPG, Rhythm, VR, you get it.

Then a Beaten, Beaten 100%, Shelved, "The Bin", and a "Multiplayer" category. Games are allowed in multiple categories. The Bin does not hold many games, you've gotta earn being thrown in the trash.

That way, when I think, "I wanna play a Rogue Like" I don't have to recall all their titles or anything. Then my Steam Deck came around and the default big picture view makes my sorting... Mostly useless.