I used to play more chopin, but right now I'm learning pieces of these composers:
Bach, Beethoven, Brahms, Stenhammar (a swedish composer), Chopin and Moszkowski.
In my current "play-able" repertoire I have these composers:
Chopin, Rachmaninoff, Debussy, Sinding
I'm not going to list the ones I have been playing, there are some such as Haydn, Grieg etc..