I find psychological comics interesting, I would recommend Countdown to Countdown, and Try again, I love the story line and the characters so much. They're both gay themed comics.
definitely recommend the Goblins of Razard.
I would also, like to recommend Night to meet you.~
and here's a bit of shameless advertising
My comic LostMyth, has a psychological ending, it's a bit hard to follow since i'm a horrible writer but I try ;w;<3