Sorry in advance for the ultra-long post!
Here are some girl name ideas that either aren’t Hebrew names or are Hebrew names but aren’t ultra-commonly used these days within the Jewish community. I think these are names that “bridge the gap” between the feminine, vintage-y vibe of [name_f]Arabella[/name_f] and the spunky-yet-whimsical nature of [name_u]Juniper[/name_u].
[name_f]Adrienne[/name_f], [name_u]Ainsley[/name_u]/[name_f]Ansley[/name_f], [name_f]Astrid[/name_f], [name_f]Audrey[/name_f], [name_f]Avalon[/name_f], Avonlea, [name_f]Avril[/name_f], Anavieve
[name_f]Beatrice[/name_f]/[name_f]Beatrix[/name_f]
[name_f]Camille[/name_f], [name_f]Cassandra[/name_f], [name_f]Carina[/name_f]/[name_f]Karina[/name_f], [name_f]Corrinne[/name_f], [name_f]Katrina[/name_f]/[name_f]Catrina[/name_f], [name_f]Cecilia[/name_f]/[name_f]Celia[/name_f], [name_f]Celeste[/name_f], [name_f]Charlize[/name_f], [name_f]Claudia[/name_f], [name_f]Coralie[/name_f]/[name_f]Coraline[/name_f]/[name_f]Cora[/name_f], [name_f]Cornelia[/name_f], [name_f]Cordelia[/name_f], [name_f]Cressida[/name_f], [name_f]Celine[/name_f]
[name_f]Dahlia[/name_f], [name_f]Delilah[/name_f], [name_f]Danica[/name_f]
[name_f]Elodie[/name_f], [name_f]Elora[/name_f], [name_f]Elowen[/name_f], [name_f]Elsa[/name_f]/[name_f]Elsie[/name_f], [name_f]Elsbeth[/name_f]/[name_f]Elspeth[/name_f], Ermengarde, [name_u]Evelyn[/name_u], [name_u]Emery[/name_u], [name_u]Everly[/name_u], [name_f]Esme[/name_f], [name_f]Eliza[/name_f], [name_f]Evangeline[/name_f] (since there are probably many [name_f]Eve[/name_f]/[name_f]Eva[/name_f]/[name_f]Evie[/name_f] classmates you could use a different nickname like [name_f]Vanna[/name_f], [name_f]Lina[/name_f], [name_u]Angie[/name_u], [name_f]Annie[/name_f], etc.)
[name_f]Felicity[/name_f], [name_f]Fiona[/name_f]
[name_f]Gwendolyn[/name_f], [name_f]Gwyneth[/name_f]
[name_f]Hazel[/name_f], [name_f]Helena[/name_f], [name_f]Hestia[/name_f]
[name_f]Imogen[/name_f], [name_f]Iris[/name_f], [name_f]Isabeau[/name_f], [name_f]Isla[/name_f]
[name_f]Laurel[/name_f], [name_f]Lorelei[/name_f], [name_f]Lillian[/name_f], [name_f]Lilith[/name_f], [name_f]Liesel[/name_f], [name_f]Lilibet[/name_f], [name_f]Liliana[/name_f], [name_f]Lucia[/name_f], [name_f]Lydia[/name_f], [name_f]Liza[/name_f]
[name_f]Mabel[/name_f], [name_f]Madeline[/name_f], [name_f]Magnolia[/name_f], [name_f]Margot[/name_f], [name_f]Marilyn[/name_f], [name_f]Matilda[/name_f], [name_f]Melody[/name_f], Melrose, [name_f]Myrtle[/name_f]
[name_f]Norah[/name_f], [name_f]Novalie[/name_f]
[name_f]Odette[/name_f]
[name_f]Penelope[/name_f], [name_f]Phoebe[/name_f]
[name_f]Ramona[/name_f], [name_f]Regina[/name_f], [name_f]Rhiannon[/name_f], [name_f]Romilly[/name_f], [name_f]Rosaline[/name_f], [name_f]Rosamund[/name_f], [name_f]Rosemary[/name_f], [name_f]Roslyn[/name_f], [name_f]Rowena[/name_f], [name_f]Roxanne[/name_f]
[name_f]Sabrina[/name_f], [name_f]Sabine[/name_f]/[name_f]Sabina[/name_f], [name_f]Savannah[/name_f], [name_f]Scarlet[/name_f], [name_f]Selena[/name_f], [name_f]Serena[/name_f], [name_f]Seraphina[/name_f], [name_f]Shayla[/name_f], [name_u]Shiloh[/name_u], [name_u]Sierra[/name_u], [name_f]Sienna[/name_f], [name_f]Sonia[/name_f]/[name_f]Sonja[/name_f]/[name_f]Sonya[/name_f], [name_f]Sybil[/name_f], [name_f]Sylvia[/name_f]
[name_f]Tallulah[/name_f], [name_f]Thelma[/name_f], [name_f]Thora[/name_f], [name_f]Thea[/name_f], [name_f]Twyla[/name_f]
[name_f]Verity[/name_f], [name_f]Viola[/name_f], [name_f]Vivica[/name_f], [name_u]Vivian[/name_u]
[name_f]Winona[/name_f]
[name_f]Yara[/name_f]
[name_f]Zara[/name_f], [name_f]Zarina[/name_f]
[name_f]Non[/name_f]-biblical boy names that fit nicely with this sibset:
[name_f]Arabella[/name_f], [name_m]Judah[/name_m], [name_u]Juniper[/name_u] &
[name_u]Arlo[/name_u], [name_u]August[/name_u], [name_u]Avery[/name_u], [name_m]Alvin[/name_m], [name_m]Ace[/name_m], [name_m]Adrian[/name_m], [name_m]Archer[/name_m]/[name_m]Archie[/name_m], [name_m]Art[/name_m]/[name_m]Artie[/name_m], [name_u]Addison[/name_u], [name_u]Ashton[/name_u], [name_m]Aston[/name_m]
[name_m]Bruno[/name_m], [name_u]Barrett[/name_u], [name_u]Bradley[/name_u], [name_u]Blaine[/name_u], [name_u]Blaise[/name_u], [name_m]Bronson[/name_m], [name_m]Beckett[/name_m], [name_m]Braham[/name_m] (this is a nice alternative to what I’m sure are a million Abrahams/Abes at your kids’ school!), [name_u]Beau[/name_u], [name_m]Burgess[/name_m], [name_m]Brooks[/name_m]
[name_m]Cael[/name_m], [name_m]Cole[/name_m], [name_u]Cameron[/name_u], [name_u]Connery[/name_u], [name_m]Collin[/name_m], [name_u]Camden[/name_u], [name_m]Callum[/name_m], [name_m]Calvin[/name_m], [name_m]Cyrus[/name_m], [name_m]Cyril[/name_m], [name_m]Cecil[/name_m], [name_m]Clinton[/name_m], [name_m]Clyde[/name_m], [name_m]Cormac[/name_m], [name_m]Clay[/name_m]/[name_m]Clayton[/name_m], [name_m]Clifford[/name_m]/[name_m]Clifton[/name_m]/[name_m]Cliff[/name_m], [name_u]Corbin[/name_u], [name_u]Campbell[/name_u], [name_u]Chandler[/name_u], [name_u]Channing[/name_u], [name_f]Cypress[/name_f]
[name_u]Dylan[/name_u], [name_m]Dominic[/name_m], [name_m]Donovan[/name_m], [name_u]Darren[/name_u], [name_m]Darius[/name_m], [name_m]Damon[/name_m], [name_m]Damien[/name_m], [name_u]Devin[/name_u], [name_u]Dexter[/name_u], [name_u]Darryl[/name_u], [name_m]Drake[/name_m], [name_u]Dane[/name_u], [name_m]Dalton[/name_m], [name_u]Dean[/name_u], [name_m]Declan[/name_m]
[name_u]Everett[/name_u], [name_u]Ellis[/name_u]/[name_u]Ellison[/name_u], [name_m]Edwin[/name_m], [name_u]Emmett[/name_u], [name_m]Eamon[/name_m], [name_u]Emerson[/name_u]
[name_u]Finn[/name_u]/[name_u]Finley[/name_u], [name_m]Forrest[/name_m], [name_m]Felix[/name_m], [name_m]Fletcher[/name_m], [name_u]Flynn[/name_u]
[name_m]Griffin[/name_m]/[name_m]Griffith[/name_m], [name_u]Glenn[/name_u], [name_m]Grant[/name_m], [name_m]Graham[/name_m], [name_m]Garrett[/name_m]/[name_m]Gareth[/name_m], [name_m]Garth[/name_m], [name_m]Gavin[/name_m], [name_m]Gage[/name_m], [name_m]Grayson[/name_m]
[name_m]Harris[/name_m]/[name_m]Harrison[/name_m], [name_m]Hugh[/name_m], [name_m]Heath[/name_m], [name_m]Hawthorne[/name_m], [name_u]Hudson[/name_u]
[name_m]Ian[/name_m], [name_m]Ivan[/name_m]
[name_m]Kellan[/name_m], [name_m]Killian[/name_m], [name_m]Kingston[/name_m], [name_m]Knox[/name_m], [name_m]Kent[/name_m]/[name_m]Kenton[/name_m]
[name_m]Lance[/name_m], [name_m]Leo[/name_m]/[name_m]Leon[/name_m], [name_u]Lawrence[/name_u], [name_u]Lyle[/name_u]/[name_m]Lyall[/name_m], [name_u]Linden[/name_u], [name_u]Lionel[/name_u], [name_u]Lennox[/name_u], [name_m]Lysander[/name_m] (probably would go by ‘[name_m]Xander[/name_m]?’), [name_u]Lorne[/name_u], [name_m]Landon[/name_m]
[name_m]Milo[/name_m], [name_m]Malcolm[/name_m], [name_m]Miles[/name_m], [name_u]Marlow[/name_u], [name_m]Maxwell[/name_m], [name_m]Miller[/name_m], [name_m]Moss[/name_m], [name_m]Milton[/name_m]
[name_m]Nolan[/name_m], [name_u]Norris[/name_u], [name_m]Norton[/name_m], [name_m]Nigel[/name_m], [name_u]Niall[/name_u], [name_m]Nils[/name_m]
[name_m]Oscar[/name_m], [name_m]Orson[/name_m], [name_u]Orion[/name_u]
[name_u]Paxton[/name_u]
[name_u]Quincy[/name_u], [name_m]Quinton[/name_m]
[name_u]Rex[/name_u], [name_u]Reid[/name_u]/[name_u]Reed[/name_u], [name_u]Rhys[/name_u]/[name_u]Reese[/name_u], [name_m]Russell[/name_m], [name_m]Randall[/name_m], [name_u]Rowan[/name_u], Roanan, [name_m]Ruben[/name_m], [name_m]Roland[/name_m], [name_m]Ross[/name_m], [name_m]Rufus[/name_m]
[name_u]Seth[/name_u], [name_m]Soren[/name_m], [name_u]Sterling[/name_u], [name_m]Sebastian[/name_m], [name_u]Sawyer[/name_u], [name_u]Sheldon[/name_u], [name_m]Slade[/name_m], [name_m]Sylvester[/name_m], [name_u]Shiloh[/name_u], [name_u]Sutton[/name_u], [name_u]Spencer[/name_u]
[name_u]Tristan[/name_u], [name_m]Torrence[/name_m], [name_u]Tatum[/name_u], [name_m]Trenton[/name_m], [name_u]Tobin[/name_u], [name_m]Tobias[/name_m], [name_m]Tabor[/name_m]
[name_m]Wesley[/name_m], [name_m]Warren[/name_m], [name_m]Wilson[/name_m], [name_m]Walt[/name_m]/[name_m]Walter[/name_m], [name_m]Wayde[/name_m], [name_m]Wells[/name_m]
[name_m]Xavier[/name_m]
[name_m]Zander[/name_m]