MHW has an announced planned release for PC, so it doesn't belong on this list. RDR2 for example has no indication of a PC version.
It's kind of a weird thread. What's a 3rd party game? There are plenty of Japanese games that are only available on PS4, 3DS or mobile. That doesn't mean they're not 3rd party games. I don't know what such a long is supposed to achieve. It's gonna be a lot shorter if you just count all games made by console manufacturers.
It's an odd thread, I mean what is the purpose of it anyway?.
There are plenty of games coming out this year from 3rd party devs that aren't releasing on consoles either.