Excluding VC releases...
8 first party games
29 third party (No Just Dance or Skylanders, lol)
So around 70% of third party content.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.