I would heed the above advice about the song. If that’s a dealbreaker for you then so be it! If not, I think [name_f]Belle[/name_f] [name_f]Evangeline[/name_f] is a lovely name although it’s not quite as distinctive as the sisters.
[name_f][/name_f]A few rarer B names:
[name_f]Bettina[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Briar[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Bristol[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Bonita[/name_f] [name_f]Evangeline[/name_f] (this has a similar meaning to [name_f]Belle[/name_f] in a different language!)
A few [name_f]French[/name_f] options:
[name_f][/name_f][name_f]Allaire[/name_f] [name_f]Evangeline[/name_f] (super accessible nicknames of [name_f]Alli[/name_f] and Airy!)
[name_f][/name_f]Nanette/Suzette/Georgette [name_f]Evangeline[/name_f] (love these three -ettes and come with their respective unique nicknames of [name_f]Nan[/name_f], [name_f]Suzy[/name_f], and Gigi/Georgie but also [name_f]Etta[/name_f] and Ettie!)
[name_f][/name_f][name_f]Jolie[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Sabine[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Soleil[/name_f] [name_f]Evangeline[/name_f]
I already mentioned a few above but other names that mean beauty/beautiful/related things:
[name_f][/name_f][name_f]Calista[/name_f] / [name_f]Callie[/name_f] / [name_f]Calla[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Alina[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Senna[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Ilona[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Zaina[/name_f] [name_f]Evangeline[/name_f]
[name_f][/name_f][name_f]Noya[/name_f] [name_f]Evangeline[/name_f]
Hopefully this helps!