I actually think Ella and Holly are in a similar vein. How about:
Elsa, Elsie, Esme, Evie, Elery, Erin, Eden, Effie, Etta, Enya, Edie, Edith, Elise, Elora
Halle, Heidi, Hattie, Hazel, Hebe, Hope, Honor, Hadley, Hannah
Abbie, Alice, Anna, Amy, Amber, Ava, Bella, Bonnie, Cara, Clara, Ciara, Connie, Callie, Cassie, Dana, Daisy, Darcey, Flora, Freya, Gracie, Georgia, Ivy, Isla, India, Josie, Katie, Kayla, Leah, Lucy, Lily, Layla, Lyla, Lyra, Lola, Luna, Molly, Millie, Maddie, Mila, Mika, Mara, Nina, Nancy, Orla, Poppy, Pippa, Polly, Phoebe, Ruby, Rosie, Rosa, Robyn, Sara, Sadie, Stella, Sylvie, Sienna, Tilly, Thea, Tara, Verity, Willow, Zoe, Zara