Persona 5. Funny thing is... it might actually happen
This was going to be my answer, but then I remembered Persona 5 is also on PS3. In fact, it was developed primary for that system and later ported to PS4 because we were already midway through the PS4's life cycle when the game came out. However, if it can run on PS3 than there's no reason to think the Switch can't run it!
Oh, I think the game is not exactly super demanding hardware wise. I bet even the Vita could run it, given that is a PS3 game (and then again, not a big one).
Whether or not it comes to the Switch, will be a matter of ATLUS/SEGA's will to get rid off the Playstation exclusivity. And seeing how Joker is going to be the first Smash DLC... I think they might hace already made their choice.