I used to think
Charlotte was plain and "gray", but I'm starting to like it. It has a sweet quality that makes it very likable.
Out of your combos, I like
Charlotte Alison,
Charlotte Elizabeth,
Charlotte Vivian,
Charlotte Katharine, and
Charlotte Emily. Here are a few other MN suggestions:
Charlotte Austen (I always thought this would be a cool combo for a
Jane Austen fan).
Charlotte NoelleCharlotte SophiaCharlotte AnnabelCharlotte OliviaCharlotte PenelopeCharlotte JoyCharlotte Rachel