On Xbox, I've got MK X and 11, Injustice 2, Killer Instinct, and I bought all of the old DOA games and SFIV when they were on sale recently. All of those MK games were ultra cheap recently, as well. I'll probably grab some others like SC and Tekken, even though I'd be double dipping. They all play @1080p/60, so the Series S is perfect to be my fighting game platform.
The haptic feedback and adaptive triggers are nice additions, but the controller is just not as comfortable to me. The technology in the Dual Sense is far ahead of any of the other controllers, but it's just a personal preference for me.
For all the talk about how good the Dual Sense controller is, I'll take the Xbox Series X/S controller over it any day of the week. I ended up buying Red Dead Redemption 2 on Xbox because I couldn't see myself using the Dual Sense for another 50 hours.
What I should have done was use one of my Dual Shock 4 controllers, which I like better than the Dual Sense too, with my PS5 since RDR 2 is a last-gen game and is compatible with them.