If you like visual kei, try X-Teen (sometimes stylized as XTEEN).
If you like folk, try Rabbitology.
If you like surreal pop, try Elita or Baby Bugs.
If you like Gothic, try Blackbriar.
If you like Riot Grrl, try Cheap Perfume.
(Note- Blackbriar being Gothic is debatable, because some of their older music is much more metal-leaning, particularly Ready To Kill)