Favorite: Cosmic or otherwise mind bending horror where watching is uncomfortable and makes me anxious and I'm trying to figure out what is going on without ever actually finding out more than the superficial explanation. The absolute best tend to have no or extremely few jump scares and any gore makes sense in the context of the setting.

Least favorite: Anything that relies entirely on jump scares or torture. Being startled or grossed out are not scary to me at all, and come across as lazy.

I see horror comedies as primarily comedies and they can have as many jump scares and ridiculous torture and gore that they want to as long as it is played up for comedic purposes.