On the Milah/Maela/Mylah/Lilah theme:
Ayla, Ava, Daya, Dua, Eva, Gaia, Isla, Jaya, Jayla, Kayla, Kyla, Kaia, Kia, Leah, Laya, Lena, Layla, Lola, Luna, Liza, Mia, Maia, Maya, Mala, Mina, Mira, Mika, Mara, Nia, Nyah, Nola, Nova, Nyla, Orla, Ria, Skylar, Saylor, Sia, Tia, Tara, Taylor, Talia, Una, Viola, Willa, Zola, Zia, Zillah
More like Autumn but more unusual:
Aspen, Aven, Arwen, Briar, Blossom, Calla, Clover, Fearne, Fleur, Hazel, Jonquil, Journey, Meadow, Misty, Phoenix, Rowan, Robyn, Raine, River, Saffron, Sorrel, Storm, Wren
A random selection of unusual names that I think are beautiful:
Amberley, Alyona, Bronte, Calliope, Celyn, Danica, Delphi, Evadne, Fenella, Giselle, Isolde, Jacinta, Keziah, Leonie, Lorelai, Larissa, Miranda, Mirabelle, Melinda, Neriah, Piper, Rivkah, Romilly, Sadie, Saskia, Sephora, Talitha, Tassita, Verity, Vanessa, Xanthe, Zeryn