I didn't watch all of these movies but:
Get Out is not exactly horror. Too much humor. It doesn't have an even tone.
I'm too scared to watch The Exorcist.
The Blair Witch Project is such a great movie. Has such a real world feeling to it. Don't ever watch the sequel.
Paranormal Activity. Meh. No one acts like a normal person in those movies.
The Witch. I guess I'm one of the few people who was not overly impressed by this movie.