Great list! Aphra is one of my favourite names.
Love lots of the other suggestions too.
Other ideas which I don't think are repeats:
Avril, Alba, Amberley, Amaya, Amity, Bronte, Billie, Cleo, Calypso, Celeste, Delphi, Dulcie, Danica, Etta, Enya, Everly, Fallon, Giselle, Hebe, Honor, Iona, Jacinta, Jessamy, Keziah, Kiki, Lorelei, Livia, Mala, Mika, Morgan, Nova, Nola, Nyah, Pippi, Paloma, Quinn, Remy, Rivkah, Rowena, Sadie, Sutton, Taryn, Tansy, Veda, Xenia, Zeryn, Zia