I'm not GP, but here are the ones I've played the most:

- Walkabout mini golf (20h). Great for unwinding and the ball physics are nearly perfect.

- I Expect You To Die, 1 & 2 (15h). If you like puzzle games, these are fantastic. Super addicting the first time you play, but little replay value.

- Demeo. Like D&D-lite (10h). Can play co-op with other Quest users or with Steam on PC.

- Half Life 2 VR mod and Half-Life: Alyx (10h). I loved HL2 when it first came out so there's a massive nostalgia bonus, but Alyx is widely acclaimed.

- Pistol Whip (2h, but getting into it). This is a spiritual successor to beat saber.

The "I Expect You to Die" games are really good, there's a third one coming out soon (if I had to guess as a launch title for the 3).

Pistol Whip is an evolution of Beat Saber-esque rhythm games. Very fun, probably my most-played title.

The Last Clockwinder is a brilliant puzzle/action game that would probably be impossible to implement outside of VR: https://www.youtube.com/watch?v=JUVjNLc_X2M

As a metal music listener with fond memories of Guitar Hero, I’ve enjoyed Ragnarock a ton.

You play as the drummer on a viking boat, hitting the notes (similar to GH) to the tune of power metal. Nice workout, especially if you really get into it and start exaggerating your movements.

The trailer gives a better impression than I can.

I have no killer game, but I enjoyed many games. The most notables for me were I expected you to die series, A Fisherman's tale series, the last clockwinder, Synth Riders, Superhot

Personal favorite: Cosmodread. It’s a procedurally generated spaceship horror game where you must gather resources and not get killed by monsters to escape.