My ranking is pretty close to yours just with a few switches:
1. Aliens
2. Alien
3. Prometheus
4. Alien: Covenant
5. Alien Resurrection
6. Alien 3
I havenβt seen a lot of Ridley Scott movies outside of the Alien movies but the ones I can recommend are Thelma & Louise, American Gangster, The Martian, & Hannibal. Hannibal is a sequel to The Silence of the Lambs. Itβs not near as good as SOTL bc that movie is an untouchable classic but from what I can remember it was pretty decent. Family Guy actually just aired a funny parody of SOTL Sun night.