Two excellent woman pianists who spring to mind are the Scottish pianist Joanna MacGregor who likes to include contemporary arrangements of the Broadway greats including George Gershwin in her recital programmes and Gloria Cheng/Chang whom I often hear on our Concert FM radio programme. She is a lovely pianist of international standing and specialises in the great modernists of the 20th century such as Stravinsky, Schoenberg, Berg and others.
André Previn, the great pianist, composer and conductor is certainly worth listening to and his improvisations at the piano in jazz style are amazing.
Regards,
Robert.