Depends on your preferences.
I have enjoyed Mario + Rabbids Kingdom Battle, Arms and Fast RMX.
Some of the NeoGeo Games available in the eShop are really good, at least if you are into Beat em Ups and Arcade Shooters AND if you don't mind the configuration, as they're basically NeoGeo Emulators.
Many cheaper games are basically Smartphone Game Coversions, so I wouldn't mind them.