I think for me it's alien: covenant. I was really interested in the ideas explored in prometheus and covenant just expanded on them. I don't get much into the details of why it is or isn't a good movie.
Luckily, though, HBO ran raised by wolves which really delved into ideals about AI and planet seeding etc. So that itch got way scratched even if the run was cut short.
My friend Garrett Gilchrist has bee trying to restore that movie to something closer to Morton and Jankel's original vision for years now. I keep meaning to watch it because I do think that the movie had a lot of good ideas even if it was a mess.