Clara Wieck
I'm a big fan of Sofia Gubaidulina, specifically her piece "Chaconne" is a great one: It is one of those songs that at first seems very brash and random but after a few listens becomes quite catchy in its own way. I find myself humming some of the main themes.She wrote a handful of other piano solo works and some orchestral/concerto-type works as well, search around for them. I think Spotify has some collection albums if you use that.