Not sure what flavor you're looking for but here's some of the ones I enjoyed:
- Pan's Labyrinth - fairy tale horror
- Gretel & Hansel -fairy tale horror
- Babadook - dramatic horror
- Mothman Prophecies - dramatic horror
- Hereditary - dramatic horror
- The Descent - adventure/action horror
- Jeepers Creepers - adventure/action horror
- The Mist - adventure/action horror
- The Crazies - adventure/action horror
- 10 Cloverfield Lane - adventure/action horror
- This is the End - comedy horror
- Shaun of the Dead - comedy horror
- Zombieland - comedy horror.
On my Halloween movie list this year I'm planning on watching
- Little Otik (fairy tale horror with stop motion & live action - looks artsy)
- Lamb (supernatural horror)
- Tigers are not Afraid (supposed to be similar to Pan's Labyrinth)
- Midnight Meat Train (Clive Barker horror- one of Bradley cooper's earlier movies)
Saw some other good ones already posted here - Event Horizon, Midsommar - so I think you'll get a good list.