Dan Lambskins horror list would only be 20 movies long because nothing else is horror.
I know im being overly critical but im generally looking for some sort of supernatural element (zombies, ghosts, demons, werewolves, etc) to classify it as horror
Absent that it’s more the overall tone of the movie and that’s more of a “I know it when I see it” situation.
I am with you for the most part, but we seem to disagree now on Lambs. For me sci fi, action, and comedy movies have a higher bar to clear - just having a gory scene or something stalking people doesn't make it horror. Yes, Predator has skinned people and a stalking alien. It also has a ton of huge guns, mid air arm wrestling, shootouts, etc.. That is the reason I'd guess (hope) we see one movie from another extraterrestrial series but not it's sequel. Like I said, I keep going back to the video store days - 0% chance I would have had Predator, YF, or Terminator in the horror section. Thriller/suspense movies blur more because at their core they are already about building up the tension as well.