All of the names you like sound great to me!
If you want more suggestions, maybe:
[name_f]Vivienne[/name_f]
[name_f]Delaney[/name_f]
[name_f]Maryam[/name_f]
[name_f]Cecelia[/name_f]
[name_f]Leonie[/name_f]
[name_f]Jacqueline[/name_f]
[name_f]Rhiannon[/name_f]
[name_m]Or[/name_m] even more than those suggestions I love Xanthea that @love.endures suggested! It feels the right combination of established but fresh and unexpected to fit with your other children’s names.