Gabriel Fauré is usually considered an impressionist composer. One of the greats, he wrote a lot of gorgeous vocal and chamber music, and his piano music is also now being recognized more.
Other than that, just look for French pianists around the turn of the 20th century -- D'Indy? Canteloube? Some might say Puccini is also an impressionist.
You also might like some of the composers in the Spanish/Portuguese/Brazilian tradition, Albeniz, Granados, de Falla, Villa-Lobos.
Satie I would describe as more of a post-impressionist, if that means anything.
Topic: Impressionism