The Sinking City has just been released on Steam today. It was going to be launched here too, before the publishing issues. Maybe it will appear today or during the week.

Ocean's Heart is coming to GOG on January 21:
https://www.youtube.com/watch?v=isr285wO_xA

And the developers of the following Kickstarter games have expressed interest in bringing their games to GOG:
Project Sense - 不祥的预感: A Cyberpunk Ghost Story - https://www.kickstarter.com/projects/2030067069/project-sense-a-cyberpunk-ghost-story/posts/3046142
Inexplicable Deaths in Damipolis: Inner Thoughts - https://www.kickstarter.com/projects/1628314855/inexplicable-deaths-in-damipolis-inner-thoughts
Ada: Tainted Soil - https://www.kickstarter.com/projects/hazygamedev/ada-0
Kapia - https://www.kickstarter.com/projects/2for2/kapia
Starless Eternity - https://www.kickstarter.com/projects/851419162/starless-eternity/description
Clunky Hero - https://www.kickstarter.com/projects/piovesan/clunky-hero
Terra Invicta - https://www.kickstarter.com/projects/terrainvicta/terra-invicta/faqs
Kharon's Crypt - https://www.kickstarter.com/projects/metalscale/kharons-crypt-even-death-may-die/posts/2856917

Starless Night sounds so interesting, but they had 500 pounds goal, wtf?

Fingers crossed! Been waiting for this one!

good lookin' out on those news... really want to play that one some time

Well, it seems that The Sinking City situation is still messy:

https://www.gog.com/forum/general/the_sinking_city/post2

On january 28th the EPIC-exclusivity of Journey to the Savage Planet ends, and publisher 505 Games is GOG-friendly. So there is hope!

I'm still wondering whether Death Stranding might eventually make it here. *shrug*

In the case of Death Stranding I think it's Kojima's fault, I had read some people discussing the fact that he's obsessed with DRM and the fear of his games being pirated.

I can understand this, but Death Stranding has been cracked like 2 months ago ...

I wouldn't say that. Well, or clarified that 505 Games is very partially friendly.
For example, GOG does not have a bunch of games that are on Steam and released before Control:
Death Stranding
DRIFT21
Assetto Corsa Competizione
Horace
Underworld Ascendant
Portal Knights
Joe Dever's Lone Wolf HD Remastered

Denuvo has been removed from the game in a recent patch.

I know, but Denuvo is usually removed because the license to use it expires and they don't have an additional buget to spend. And if Kojima has a real irrational fear of pirates (despite act all cool with CDProjekt RED) he might find it unacceptable to release a game on a supposedly DRM-free platform. I hope I'm wrong of course.

I believe the game is best played online so you will need Galaxy..So I don't know how a lot of people will react on that.

Yeah part of why Death Stranding won't come to GOG (probably) is that there are online-parts of the games that are deemed essential to the gameplay experience. Besides just leaving messages/signs for other players; a lot of the world itself (paths, roads, etc.) are built up by others players in your game session; of course you can build this by yourself as well but that's not the point. Thus the world is "alive" in a sense that makes it a bit too tied into the game without it being fully multiplayer.