All right...I've checked what you already watched and I'll try some recommendation of horror movies with no ghosts!
Eko Eko Azarak - this is about witchcraft
Orochi - this is about...uhm...being obsessed about something?
Ousama Game - this is a bit "who's going to be killed next?", I liked it even if a lot of people didn't
Uzumaki - this is interesting but makes you head hurt in the end XD
Zoo - this is amazing!! If you have to pick just one watch this! It's a collection of stories, but the best one I've ever seen! (what I mean is they're not stupid a/o predictable as the others sometimes are)
They're all from Japan, I'm sorry but all the movies I've watched from other countries had ghosts!
Btw, I noticed you've watched a lot of Gojira movies...I've watched just the first one, how are all the others? (I know this post was about something else, but I'm a bit curious XD )