The social console is the Switch. You can have split screen. Or local wifi where one console is the host. I used to play D3 with workmates this way. You also get 2 controllers with the base console.
On Xbox we play Castle Crashers.
With one Switch: Super Bomberman R, Puyo Puyo Tetris 2, Overcooked 2 (these are also on Xbox), Zarvot, Mario Party, New Super Mario Bros. U, Super Mario 3D World
You can also play through Donkey Kong Country, Pikmin 3, and Untitled Goose Game with two players.