Yes! You will be in the same games as players on Meta Quest, PC, PlayStation, iOS, and Android players, provided you opted for the primary server.
For game balancing reasons, you are more likely to join other players who are also playing on screen mode with a controller.
If you opted to playing only with other Xbox players, the pool of players you will be able to play with is much smaller. Players must select the Primary Server button to enable cross platform play when the option is presented upon first starting the game.