Not really in the same universe technically, but sci-fi movies made by James Cameron and Ridley Scott tend to use the same aesthetic/tech as they didn’t in the Alien franchise so I have personally decided it’s all the same universe. If it had a Power Loader Mech or an Android, it counts.

Alien, Aliens, Avatar, Raised by Wolves, Blade Runner, whatever lol

Weyland Yuyani exists in Predator too, so obviously those are also in the same universe.