I'm 60 and "Mario Kart 8" is my jam. Literally fun for all ages.

I own a WiiU, haven't upgraded to Switch (partially because so many early Switch releases were updated WiiU games), but I can also vouch for "Splatoon," which is the most fun I've had with a shooter since "Battleld 1942," and I also hear good things about the sequels. It can range from casual ("Turf War") to extremely competitive (ranked play).

Also, there are very limited communication options, so no toxic behavior to worry about.

Finally, I bought "Smash Brothers" because I was told my young niece and nephew absolutely loved it, but it wasn't for me.

Anyway, Nintendo has always been a kid-friendly brand, plus the Switch is the least expensive option.