I'll just list with a thought or two for each:
ARMS - Been playing this a lot for review for today. I managed to beat Round 4 of the Grand Prix without needing to rematch! Thankfully Skillshot didn't pop up. I suck at that mode!
Ever Oasis - It starts out really slow as it needs to teach a lot of systems to the player, but when you're let loose with more freedom, it builds up to a fun and engaging pace.
Oceanhorn - I'm playing this for the third time -- the first on iOS, the second on PS4 with a Platinum, and now Switch. This is a review build, and I'm enjoying it like I did with the PS4 version. The portability really rules!
The Legend of Zelda: Breath of the Wild - After not playing since mid-April due to other games, I finished up the Gerudo Desert main quest by talking to the princess there, wrapping things up, and then doing a sand slug race for a shrine prize. Won't bother with any DLC, as I don't think it's free?