I've found all the new npc anims as well,
save for the Alien girl, which I can't find because of how big the Colony is (assuming the scene is even there).
To add to KHTA's findings, there's also one with Uranium. She's found in the Slime Caves, the one combined with the bandit base.
edit: I've found how to have the H-scenes with the Alien Girl (I'll refer to her as Quartz from here). Apparently you need to do something first.
To do it, warp to this pod in the colony.
Then, go all the way to the left, until you reach the second area. Just keep going left, past the glitching lamp.
Here's a visual to see what I'm talking about.
Talk to that alien girl, and she'll give you something.
Go back to Quartz's room (From the pod, just keep going right to the 2 next areas. Break the wall and enter the hole)
You can refer to the pic below (It's from the guide. Thanks to the creators btw.)
If you've done it correctly, you should be able to press S to have sex with her.
The animations depend on your current state (Aroused or Futa)
I've uploaded a new save with Quartz' new anims as well if anyone's interested