Hi there.
Here are my thoughts-
Bethany-There’s nothing wrong w/this, I just don’t like it. I think it sounds a bit 80s & a bit snobby. I like similar names of [name_f]Elspeth[/name_f] or [name_f]Bernadette[/name_f] maybe?
Cordelia-I like [name_f]Cornelia[/name_f] slightly more, because it sounds sweeter & less dramatic. But [name_f]Cordelia[/name_f] is lovely.
Estelle-This is quite nice. I super love [name_f]Estella[/name_f], but I like [name_f]Estelle[/name_f] too & see no reason not to keep it on your list. It’s smart, elegant & classic.
Gwendolyn-Keep it, but to me [name_f]Gwendolen[/name_f] looks sleeker.
Helena-I don’t care for this one. The pronunciation seems like it’d be a headache, & I just don’t find it that pretty. I kind of like [name_f]Elena[/name_f]. [name_f]Helen[/name_f] is not my cup of tea either, but I think that it’s still a better fit for your list than [name_f]Helena[/name_f].
Leora-So lovely! I prefer [name_f]Leora[/name_f]. It just looks nicer, but either way. This is soft, a bit exotic, simple yet unique. Feminine, smart, all the good things.
Nelle-I definitely prefer this as a nn, & the ‘e’ at the end looks off. [name_f]Helena[/name_f] or [name_f]Helen[/name_f] nn [name_f]Nell[/name_f] works. I also love [name_f]Eleanor[/name_f], [name_f]Eleanora[/name_f], [name_f]Ellen[/name_f], [name_f]Cornelia[/name_f] (hey!) or [name_f]Penelope[/name_f].
Odette-I don’t much care for this one. It just sounds heavy. Similar names that I find more pleasant are [name_f]Colette[/name_f], [name_f]Cosette[/name_f] or [name_f]Ottilie[/name_f].
Regina-I don’t love it, but it’s different & not terrible. I can see the appeal.
Sybil-Same as above.
Hope this helps. 