Personally, I love horror comedy. I find a good one endlessly rewatchable. Cabin in the Woods, Return of the Living Dead, Tucker & Dale, Scream, frigging Killer Klowns from Outer Space! Definitely my favorite.
Otherwise I’m really into paranormal & zombie horror. I think that would make up my top three. Fast > slow zombies.
Firefly does a good job of this with its Blue Gloves, Jubal Early, Adelai Niska, and Reavers. They’re the worst kind of monsters—human ones.
Also Twilight Zone (Peele series), Six Degrees of Freedom is fantastic existential scifi horror.