So, it looks like you don't like 'popular classic traditional' and do like 'slightly quirky, trendy, modern-but-still-traditional'?
How about:
Arlo, Alistair, Anton, Austin, Blake, Blair, Benedict, Casper, Cosmo, Dustin, Ellis, Elliot, Errol, Fergus, Gray, Harris, Ivan, Inigo, Justin, Jared, Jude, Jeremy, Logan, Lewis, Milo, Nico, Owen, Patrick, Parker, Quinn, Rowan, Robin, Solomon, Silas, Sidney, Theo, Vincent, Xavier
Astrid, Alexis, Alicia, Ariel, Amber, Aubrey, Bryony, Bronte, Carys, Cleo, Clarissa, Cassandra, Dulcie, Daphne, Ebony, Effie, Evadne, Eirlys, Elowen, Elina, Elianne, Fallon, Faith, Giselle, Hazel, Harmony, Hebe, Iona, Juliet, Jessamy, Katrina, Kiera, Lyra, Livia, Larissa, Leona, Lorelai, Mara, Mika, Mala, Marissa, Melinda, Marianne, Nia, Nyah, Natalia, Nadia, Piper, Robina, Robyn, Ramona, Romilly, Sadie, Saskia, Sabrina, Sorrel, Saffron, Taryn, Tamara, Verity, Xanthe, Zara