What cinematic universe includes the characters Ellen Ripley, Xenomorphs, and the Weyland-Yutani Corporation?

The Alien universe includes Ellen Ripley (Sigourney Weaver), the deadly Xenomorphs, and the sinister Weyland-Yutani Corporation, interested in exploiting aliens as biological weapons. The franchise began with Ridley Scott's 'Alien' (1979) and continued with sequels directed by James Cameron, David Fincher and Jean-Pierre Jeunet, as well as prequels such as 'Prometheus' and 'Alien: Covenant' that explore the origins of these creatures.