Creep is a good one. Creep 2 is very good as well.The Exorcist was always near the top when I was younger and even now as a 50+ guy I get a little creeped if I'm scrolling thru horror movie lists and they show that one face of her.
I would give a strong recommendation for Hell House LLC. My daughter is a big horror fan and we will randomly pick something from whatever streaming service we're looking at. Last year we picked HH LLC and I had no expectations at all, if anything was expecting to be underwhelmed. There are a ton of low budget, found footage, haunted house movies out there and honestly I was blown away. There are 3 or 4 really solid scares in that movie. The two sequels were ok but we watched it again a few days after we watched the first time and once this year and even though you know some of those parts are coming, it still works.
I thought "Creep" was pretty good. Also, Shudder has a movie called "Haunt" that is pretty good and has a big budget look to it but I heard it was filmed outside of Cincinnati in Kentucky. The setting is supposed to be near Southern Illinois U. but the filmmakers graduated from there but are both KY guys
There is also a prequel to Hell House LLC coming out next year. I liked the 2nd Hell House, nowhere near as good as the first. The third one was so poorly reviewed that I haven't even bothered watching it.