Zelda - Breath of the Wild (P)
Mario Kart 8 Deluxe (P)
ARMS (P)
Splatoon 2 (P)
Super Mario Odyssey (P)
Xenoblade Chronicles 2 (P)
Donkey Kong Country: Tropical Freeze (P)

So 7 first party games in total, all physical. Also 4 physical and 1 digital 3rd Party games.

Donkey Kong Tropical Freeze (P)

I only have one Switch game. All the other games I have are "demos"

Breath of the Wild (P)

Breath of the Wild (P)
Mario Kart 8 Deluxe (D)
Splatoon 2 (D)
ARMS (D)
Super Mario Odyssey (D)
XenoBlade Chronicles 2 (D)

Third Party
4 Physical, 6 Digital (plus 6 more if you include indies)

I'm mostly Digital, I can't stand Switching out game carts.

41 Games in total

11 First Party games

30 third party games

19 physical games

21 digital games

First Party games

ARMS

Mario Kart 8

Splatoon 2

Breath of the Wild

Super Mario Odyssey

Pokken Tournament

Fire Emblem Warriors

Xenoblade 2

Donkey Funky Kong Country Tropical Freeze

Bayonetta 1 

Bayonetta 2

Nice thread !

6 First Party Games :

- The Legend of Zelda : Breath of the Wild (P)
- Super Mario Odyssey (P)
- Mario Kart 8 Deluxe (P)
- Bayonetta 2 (P)
- Mario + Rabbids : Kingdom Battle (P)
- Xenoblade Chronicles 2 (P)

5 Third Party Games :

3 physical games, 2 digital games

ok, so I own 14 switch game in total, 6 are first party.

Mario kart 8 deluxe (P)
Nintendo Labo Variety pack (P)
Splatoon 2 (P)
Mario+Rabbids Kingdom Battle (P)
Mario Odyssey (P)
Bayonetta 2 (P)

i also have 8 third Party game, 5 physical and 3 digital.

Added:

One Piece Pirate Warriors 3 Deluxe Edition (p)

One more digital third party game for me (Stardew Valley).

One more digital third party game for me (Mega Man Legacy Collection 2).