Sorry for any repeats, only skimmed the list. Tried to avoid the top 100ish but not sure if they're all outside it or not:
Anya, Ayla, Aria, Ariel, Ada, Alba, Alma, Astrid, Avril, April, Aileen, Aoife, Brooke, Bethan, Belen, Brielle, Brynn, Briley, Brenna, Bridget, Cerys, Carys, Cora, Cara, Chloe, Claire, Clea, Cody, Connie, Callie, Carrie, Cassie, Carly, Casey, Dana, Demi, Dora, Darcey, Eden, Erin, Esther, Effie, Enya, Eilidh, Edith, Elsa, Farrah, Ffion, Faye, Fern, Gina, Gayle, Hallie, Hayley, Hadley, Harper, Honor, Hebe, Hero, Hera, Ida, Irena, Ivy, Inga, Judy, Julie, Jenna, Jodie, Josie, Jordan, Jada, Jayla, Kayla, Kyla, Kyra, Kaylie, Kelsey, Karen, Kira, Kiran, Keira, Luna, Lyra, Lyla, Lila, Lara, Lana, Lena, Lucia, Lisa, Linda, Mya, Macey, Miley, Marley, Mila, Mina, Mira, Mona, Martha, Nicole, Nina, Nadine, Niamh, Nora, Nancy, Orla, Odette, Opal, Olive, Paige, Peyton, Polly, Payson, Piper, Penny, Quinn, Ruth, Rita, Robyn, Riley, Reagan, Seren, Sutton, Sasha, Sadie, Stella, Sorcha, Sian, Sinead, Susie, Sally, Tara, Tessa, Taylor, Tamsin, Tonya, Toya, Una, Violet, Wendy, Willow, Wandy, Xanthe, Yasmin, Yvette, Yvonne, Zia, Zillah