Well, signed up for Paramount+ (Though I'm gonna ditch it before the 7-day trial ends).
Trek wise they've got almost everything as far as I can tell.
Original Series
The Next Generation
Deep Space Nine
Voyager
Enterprise
Discovery
Prodigy
Strange New Worlds
Movies 1-10
Star Trek (2009)
It does appear to be missing The Animated Series, Lower Decks, ST: Into Darkness and ST: Beyond.
Also TNG is missing Encounter at Farpoint for some reason. There may be other missing episodes that I've not seen.
I can't 100% confirm the line-up as the search function doesn't seem to be working on my PC right now. So there might be some more stuff there.
But I'm surprised to see TNG, DS9 etc all there day one. It's definitely all coming off Netflix as soon as they can.
Edit: Also missed Picard from the list of absent shows. I think that show gave me PTSD and my brain refuses to acknowledge it exists.