There's lots of good films out there that are foreign or just didn't stick for whatever reason.
Here's a few:
This is an awesome Korean thriller movie I just saw inspired by a real serial killer that puts most of our killers in America to shame.
These types of movies are usually the 'jump out' kind that I don't really like, or the deeply unsettling type. This one is both. Memories of Murder, directed by Bong Joon-ho (Parasite) is another great one. Check it out if you don't mind subtitles.
Recent fucking crazy western horror film with cannibal savages. Some well known actors like Kurt Russell and Richard Jenkins.
This one may not qualify as obscure but I watch a ton and hadn't come across it until recently. Great look at the underbelly of decaying Atlantic City in the early 80's and people in the casino world. Burt Lancaster and Susan Sarandon.
Whatcha got?