The whole We Were Here series is marvelous. Asymmetrical co-op puzzle games. My friend and I’s recent games list looks very similar to this.
We also do a lot of single player games with one of us streaming over discord. When it’s a slow-burn puzzle or mystery game, it doesn’t really matter who is actually controlling.
For those types, I really recommend Return of the Obra Dinn. We’re currently working our way through the entire Frogwares Sherlock Holmes collection. The old ones are so terrible, which is a greatness all by itself.