[name]Luca[/name] - I can see where you’re going with this, but unfortunately, I don’t think [name]Luca[/name] works for a girl since it’s so clearly a boy’s name (others will disagree, but since your list on the whole tends toward feminine names, using a boy’s name would make it difficult if/when you have another girl down the line). I think [name]Lucia[/name] would be a much better option for you.
[name]Lucy[/name] - This is a wonderful name, though I prefer it as a nickname for [name]Lucille[/name], [name]Lucia[/name], or [name]Lucinda[/name] ([name]Lucia[/name] is probably my favorite of the three, especially with a Spanish last name).
[name]Sofia[/name] - This is beautiful, but you may be bothered by the overwhelming popularity.
[name]Adelle[/name]- I really like this, though I think I prefer it spelled [name]Adele[/name].
[name]Olivia[/name] - Like [name]Sophia[/name], a very beautiful name that is unfortunately ridiculously popular right now. Of course it depends on where you live and how much popularity bothers you. Where I live, I feel like every other child I meet is either [name]Olivia[/name] or [name]Sophia[/name] and it’s enough to deter me from using either name.
[name]Cleo[/name]/[name]Clio[/name] - This is not as soft as the other names on your list; to me, it’s just a little bit abrupt, as if it should be short for something. Not my favorite.
[name]Juliet[/name]/[name]Juliette[/name] - This is a wonderful name. I prefer the [name]Juliet[/name] spelling; I think if I were you I would strongly consider this as a middle name to buffer a softer sounding name upfront. I wonder if you also like [name]Julia[/name] or [name]Juliana[/name]? I think either would make a beautiful first name!
[name]Amelia[/name] - This is one of my favorites! You also might like [name]Cecilia[/name] or [name]Ophelia[/name], which are equally beautiful but take you out of the realm of names that sound like [name]Emily[/name] and are overly popular. [name]Amelia[/name] is different enough from [name]Emily[/name], though, that if you love it, you should definitely go for it.
[name]Alijah[/name] - I’m not sure if you mean this to be pronounced like [name]Aliyah[/name] or like the boy’s name [name]Elijah[/name]. If the former, I think it’s pretty, but it’s not my favorite in your list. If the latter, then I dislike how masculine it sounds, but you might like [name]Eliza[/name], which has a similar sound but is decidedly feminine.
[name]Amelie[/name] - pretty, but I prefer [name]Amelia[/name].
[name]Jada[/name] - this seems insubstantial next to some of your other choices.