Choping
TONS of composers had etudes.
Saint Saens and Scriabin also wrote wonderful etudes, have a look at them! And if you don't want overplayed ones, stay away from Chopin and Liszt in most cases...
Would it be bad to play them though? Would the judges mark off points or judge differently?
A different sort of "exercise" entirely. @ OP - Chopin is fine for auditions but some places require it to be one of the faster ones. Ignore idiots. Liszt is equally "overdone". If you are looking for alternatives, Alkan Op 35, Thalberg, Lyapunov, Kapustin, Bolcom, Ligeti and Hamelin are all options. So would be one of the Godowsky studies.