Apart from the usual suspects (botw, totk, odyssey, acnh) I've loved Monster Hunter Rise and Sonic Mania.
But more than anything else the switch has been my go-to platform for indie titles.
I've really enjoyed Death's Door and Bugs Fables: The Everlasting Sapling (still have to finish it).
I also want to give Signalis a try, but lately Totk has been monopolizing my playtime.
Here's the trailer btw
https://www.youtube.com/watch?v=JStAYvbeSHc