yesss, it's so good! I love horror in any medium, but words + art is the best, haha. That tumblr has recommendations, with links to read some of them. I've found Shintaro Kago and Jun Hayumi manga (some pretty sick, sometimes abstract or absurd guro) around the internet somewhere, and I'm not sure how popular they are but I'd be happy to send you my horror manga folder. Minus the Junji Ito, because you've probably read all of that already.

Thanks! :)