This is interesting. The Series S/X have a Developer Mode that can be switched in and out out and costs $20. Then you can run UWP apps, one of which is RetroArch which covers everything from MAME to Nintendo Wii and maybe soon PS1 and PS2… ON AN XBOX!
Edit: It can do PS2 now… Not perfectly but it can do it, an xBox running PS2 games, damn.
Edit 2: RetroArch article on how to set it up and potential pit falls