If Rachmaninoff is my favorite composers, what other composers do you think I would like?

If Rachmaninoff is my favorite composers, what other composers do you think I would like. I can't find other interesting composers. I find composers such as Chopin, Beethoven, and Mozart boring, I think it's because they seem to lack dissidence, they always seem to write what sounds pretty rather than what has character. I think I like Rachmaninoff because he isn't afraid to sound dissident.