Soren0079 on 19 April 2019
The bottom of the big third party publishers is Tencent(Epic) who have 2 games on Switch but that'll change if Switch enters China.
Otherwise it's Konami with 3 and 1 upcoming, Activision Blizzard with 3 games & EA with 4 games. The best is Bandai Namco with 27 games.