When looking at the latest sales charts, and game sales for the Switch, 3rd party seems to be completely shunned. 

This week the highest scoring 3rd party title was in spot 26, and the highest scoring 3rd party title without Mario in the title hit 33. Albeit these games are rather old and not expected to be hitting the top 20 even. But if you look at their life time sales that is where it is evident that these games are ignored. I don't believe digital sales are big on the platform considering the lack of storage you get out of the box.

So I was wondering how many Switch 3rd party titles you guys own (that are unassociated with any Nintendo products). I own 3 3rd party titles right now, and 3 first party games for my Switch. I got Doom, Minecraft, and Rocket League (2 Physical, 1 digital since MC is so small & Physical wasn't available); I also plan to add Wolfenstein 2 since the game is going to be the exact same as Doom, and therefore really good.

https://nintendoeverything.com/panic-button-window-between-release-date-and-switch-release-shrinking-all-the-time/

This is also an interesting read. More ports will becoming more frequently from Panic Button I am taking from this. (Hopefully Prey, Dishonored, and future titles, I just really like Bethesda titles being on the Switch).

Zero, I only buy exclusives for the Switch and so far I haven't seen a 3rd party exclusive that I want to buy.

http://gamrconnect.vgchartz.com/thread.php?id=229571&page=1

stardew valley. will probably stay that way until southpark is under 30 or when valkyria chronicles remasted launches

We already have a thread for this.

http://gamrconnect.vgchartz.com/thread.php?id=229571&page=1

We have a thread for that, as others have mentioned.

Including Indies, probably close to 10 (Sonic, Skyrim, Puyo Tetris, Bomberman, Binding of Isaac, Hollow Knight, Stardew Valley, Minecraft (in two days) and a few I forgot).

But I disagree with the notion that Switch customers shun 3rd party games: Customers simply look out for high quality titles and there are not many third party games on the system that can compete with Nintendo's games. Whenever a third party title is reasonably good (Puyo Tetris, Bomberman, lots of Indie titles and soon Octopath Traveller) Switch owners buy the game. But while Indie support for the system is great, there is a distinct lack of "big" physical third party games. Thus, no chance for such a title to sell as well as Nintendo's games.

Oceanhorn
Doom
Skyrim
Darkest Dungeon

Day 1 this year:
Okami
Dark Souls Remastered

Other thay may get:
Octopath Traveler
Ys VIII
Dragon Ball Z

You better make Octopath Traveler the first one.

I have XBC2? Does that count?

If not, zero.