I haven't seen any of the sequels, would they count as horror? The first one you have an argument for, especially the T-rex scenes. But in my mind the Alien franchise definitely leans into horror.
This quiz is based on a 2017 list from Forbes. It's now out of date. Personally, I could see the argument for JP being a sci-fi/horror, but I also think it leans into action as well. That's probably part of why it was so successful, it reaches across so many different genres and appeals to everyone!
Would it be possible to be a bit more generous with the answers? Like accepting "Exorcist Beginning" and "Jaws Revenge" for "Exorcist: The Beginning" and Jaws: The Revenge", respectively?
This was the first quiz I ever made so I didn't know how to do custom answers at the time, but I went through and updated most of the answers to accept a wider variety. Hopefully it's more reasonable now :)