Congratulations, how exciting!
Based on the names they like, maybe…
[name_f]Alice[/name_f]
[name_f]Violet[/name_f]
[name_f]Stella[/name_f]
[name_f]Athena[/name_f]
[name_f]Lucille[/name_f] / [name_f]Lucy[/name_f]
[name_f]Amelia[/name_f]
[name_f]Astoria[/name_f]
[name_f]Penelope[/name_f]
[name_f]Autumn[/name_f]
[name_f]Margot[/name_f]
[name_f]Diana[/name_f]
[name_f]Marina[/name_f]
[name_f]Eloise[/name_f]
[name_f]Elodie[/name_f]
[name_f]Celeste[/name_f]
It seems they like more popular names (but maybe not quite top 10 popular), with lots of softer sounds and some nature and mythological influences.