Camille is not a boring or filler middle name. It is far more interesting than the likes of
Rose,
Lynn,
Marie, etc. I agree that the French pronunciation is much, much better than the English in this case.
Camille would be on my list otherwise.
As an alternative, have you considered
Camellia or
Camelia? I quite like those names.
From your list, I like
Eva Camille the best.
Other suggestions:
Beatrice CamilleDelphine CamilleElena CamilleEloise CamilleEnora CamilleEvelyn CamilleFlora CamilleIris CamilleMattea CamilleRomola CamilleSerena CamilleVenetia CamilleZosime Camille
♥ Samantha ♥