I actually force myself to play less emulation and more "normal" games. :D On my Steam Deck I use RetroArch Steam version almost exclusively to play emulation (which does not come with Playstation 2 core on the Steam store, I could install it myself but don't want to manage my own version of the core). So it's mostly old systems. As for more modern systems and games, I'm looking into DS and PSP. But didn't start anything on them right now.
Often I just end up exploring new or random games with the intention of just trying them out for a short time, and that's it then. Especially with Arcade, DOS or Amiga. I'm also into Romhacks and play MSU1 based SNES games with different soundtracks and additional enhancements. Then I try various Super Mario World Romhacks, but could not decide on which to take on and finish. Same for Super Metroid Romhacks. Man there are so many good ones.
- F-Zero Deluxe (SNES Romhack, 2024): F-Zero courses from a dead Nintendo satellite service restored using VHS and AI actually didn't play this this week, but loved it so much and it was fun, especially with MSU1 soundtrack
- Deception 3 - Dark Delusion (Playstation, 1999): https://www.mobygames.com/game/8344/deception-iii-dark-delusion/ still need to finish, love the soundtrack but controls are not good and enemy ai is just bad
- Alundra (Playstation, 1997): https://www.mobygames.com/game/5928/alundra/ a classic top down action adventure, just started it, I'm still in the beginning and curious because my friend told me since the 90s about the game
So probably not the stuff you are into, given the titles and systems you mentioned. Switch is also installed, but because I have a PC to run Switch games much better, I actually end up never playing it on the Deck.