Double L Names: Do these work as a group?

I need a collection of double l names for a group of female characters in my story, but not popular or even real names like [name_f]Isabella[/name_f], [name_f]Arabella[/name_f], [name_f]Ellen[/name_f], etc. Some of my names have a meaning that has to do with the character.

[name_f]Do[/name_f] these work, or do they not sound like one group of “cultural” names?

Librilla
Belliza
Ellenesse
[name_f]Bella[/name_f] [name_f]Elaina[/name_f] (I know it’s a real name)
Cyllene
Emollise

Also, [name_m]Hallam[/name_m] is being considered, as a surname or male name maybe.

Thanks for your opinions,
~Llumeneres