Amelie - Don't like this. It doesn't sound nice in a non-French accent, IMO. Prefer Amelia.
Ameline - Don't like. It seems made up.
Arianna - Don't like. Too heavily associated with Ariana Grande at the moment.
Charlotte Mia - Like this. I have a 10yo relative named Charlotte Mia. 
Charlotte Mari - I don't know how Mari is pronounced, so I would say no to this one.
Charlotte Mari Ann - See above, plus I don't like Ann.
Charlotta - Don't like. Seems like a misspelling of Carlotta?
Hannah - Love, love, love.
Eira - Don't like. Don't know how to pronounce this.
Emmeline - Prefer just Emily. Never know whether to pronounce it Emma-LEEN or Emma-LINE.
Eleanor / Elinor - Dislike. Also dislike Ellie.
Elena - Love, but I pronounce this differently than most people. Here, it's pronounced Eh-LAY-nah, but where my DH is from it's pronounced Eh-LEE-nah, and here on Mumsnet it seems to be pronounced ELL-eh-nah.
Eleni - Like this a lot, but very Greek, if that bothers you?
Eliana - Nope, too OTT.
Elise - Fine, but boring.
Eliza - Dislike. Prefer Elizabeth.
Elodie - Lovely. Increasing in popularity, if that bothers you.
Emiliana - Nope, too OTT. Emilia is lovely, however.
Emmylou - Nope, but love Emmy on its own.
Eveline - Prefer Evelina, but quite sweet nonetheless.
Isabella - Lovely, but dislike Izzy/Issy. Bella is very sweet.
Isabelle - Dislike. Much more liable to being shortened to Izzy.
Maisie - "Mouse". I prefer Daisy.
Marianne - I want to like this, but don't. The Marianne Faithfull association is awesome though.
Mariella - Nope.
Marielle - Nope.
Maya - Fine, but very popular at the moment. I prefer Mia.
Thea - Fine, but quite lispy.