Found I could change my vote from so long ago, which was AvP-R.
Movies like Alien Resurrection I consider to be poor but it has it's redeemable qualities, I'd watch it again but Alien to Alien 3 will always be higher priority.
Prometheus and Covenant I don't care for, but I don't hate them either like I do other movies and if people enjoy them that's fine, I just view them as unnecessary and problematic and find that they kill the mysterious immersion of the first half of Alien that I used to feel once upon a time. *sigh*
AvP and Predators are just static at this point.
AvP-R, what I originally voted for, was just outright bad, would not watch again and I at the time thought it couldn't get any worse.
But boy was I wrong because The Predator bitterly and narrowly squeezes it's way to the #1 spot of my least favourite of all the movies, it's not just outright bad but it's even repugnant from my perspective.