Both my names are on the list and I love them! But I'm a rather older generation.
I don't like the Ariel variations, I'm afraid, sound made up and too twee and like a washing powder.
I do like the Annabel variations.
Erika is fine and quite unusual, though I prefer the English spelling with a c, unless you are Scandinavian. . Helena, I like, and prefer to Eliana, unless you are Greek, or further east, but have you a specific reason for Eliana? Sounds a bit pretentious. I love Antonia, but the people I know almost invariably get called Tony or Toni, not the same for some reason with Antoinette. Carena I dislike, feels made up though it's not, but someone trying to have a posher version of Karen. Susanna no h generally posher than with an h. Serena, ok, have you thought if Sabrina as well? Like Louisa. Millicent, not my fave but nice in Milly Molly Mandy, and better than Mildred.