Shiken on 04 June 2018
Nintendo has a great arsenal of 1st party support, WiiU ports, and a few 3rd party ports.
The real answer to your question however is that the Switch has some of the best indie support currently available on consoles. Most of the older games are quick and easy to port because they are not demanding to begin with and new indies come to it due to how well they sell and fit into the portable nature of the console.
Nintendo Switch Friend Code: SW-5643-2927-1984
Animal Crossing NH Dream Address: DA-1078-9916-3261
