You have a great list!! Here are my opinions on your names:
Paiva - Interesting choice, it’s pretty but reminds me of [name_m]Pavo[/name_m] (which means turkey
) or [name_m]Pava[/name_m] (which means kettle) in Spanish
[name_f]Samara[/name_f] - [name_f]Pretty[/name_f] and princess-y while still familiar!! Like it
[name_f]Lena[/name_f] - Nice and sweet but may cause pronunciation issues (LAY-nuh vs LEE-nuh vs LEH-na). For the nn, I’d like the spelling [name_f]Leni[/name_f] !!
[name_f]Lenora[/name_f] - Very classic and regal, I like it as an [name_f]Eleanor[/name_f] alternative. Would also like [name_f]Leni[/name_f] as a nn!
[name_f]Coral[/name_f] - Not my favorite word name, but has nice imagery. Makes me think of the little mermaid
[name_f]Althea[/name_f] - Yes!! [name_u]Super[/name_u] classic and gorgeous without being overused. [name_f]Thea[/name_f] is perfect as well!
[name_f]Thea[/name_f] - I like it a lot but prefer it as a nn
[name_f]Bridget[/name_f] - [name_u]Strong[/name_u], sturdy, and classic. Not my favorite but a very solid pick
[name_f]Saoirse[/name_f] - Love!! Wish I had [name_u]Irish[/name_u] heritage so I could use it myself haha. [name_f]May[/name_f] cause pronunciation issues
[name_f]Willa[/name_f] - Very pretty and gives me southern-belle vibes, is becoming more popular
[name_f]Clara[/name_f] - Very shimmery and classic, I like it a lot but again, is becoming more popular
[name_f]Winona[/name_f] - Nice, but heavily associated with [name_f]Winona[/name_f] [name_u]Ryder[/name_u] for me (not a bad association!!)
[name_f]Safia[/name_f] - A pretty twist on the classic [name_f]Sofia[/name_f], but may get confused with [name_f]Sofia[/name_f] often (Fia is a sweet nn, maybe you’d like [name_f]Fiadh[/name_f] (pronounced the same) as a full name?)
[name_f]Yuna[/name_f] - Makes me think of the moon, but fair warning this name sounds VERY Japanese to me and I would be surprised if I met a [name_f]Yuna[/name_f] who was not Japanese
[name_f]Euna[/name_f] - Like the way it looks, but my first instinct was to pronounce it YOU-nuh. This may be your solution to [name_f]Yuna[/name_f] being too Japanese if you don’t mind it not being said like [name_f]Una[/name_f]! If you like OO-nuh, I’d suggest sticking to [name_f]Una[/name_f], [name_f]Oona[/name_f], or [name_f]Oonagh[/name_f]
May/Mae - Ooh, very short and sweet! I personally prefer the classic [name_f]May[/name_f], but [name_f]Mae[/name_f] has got a lot of spunk to her!!
[name_f]Fiona[/name_f] - [name_f]Pretty[/name_f] and unusual!
[name_f]Chiara[/name_f] - Very nice and seems fresh in the US, but be warned it may seem a little outdated in Europe
[name_u]Lark[/name_u] - I love the playfulness of [name_u]Lark[/name_u], but having it as a full name may seem a little juvenile when she gets older
[name_f]Sabrina[/name_f] - Not a fan, seems a little outdated to me (I’d expect a [name_f]Sabrina[/name_f] to be in her late 20s-early 30s)
[name_m]Ilara[/name_m] - [name_f]Pretty[/name_f], but prefer the [name_f]Elara[/name_f] spelling
[name_f]Fiadh[/name_f] - Wow I guess I predicted correctly! I think [name_f]Fiadh[/name_f] is a great pick for you giving your [name_u]Irish[/name_u] heritage, and shouldn’t be too hard pronunciation-wise
[name_f]Lumi[/name_f] - Sweet, but also may have the problem of sounding too juvenile
[name_f]Luma[/name_f] - I think this would get confused with [name_f]Luna[/name_f] 
[name_f]Sofie[/name_f] - Very pretty and sweet, would probably get misspelled as [name_f]Sophie[/name_f] often
[name_m]Elio[/name_m] - Very handsome and sunny! [name_f]May[/name_f] cause some pronunciation confusion (EE-lio vs Eh-lio)
[name_u]Callum[/name_u] - I really like [name_u]Callum[/name_u] for you, especially with [name_u]Cal[/name_u]! He feels very multicultural and no fuss
[name_m]Sylvan[/name_m] - Wow [name_m]Sylvan[/name_m] is stunning!! Very handsome
Liori - I like the tie back to Jewish heritage, but think maybe [name_u]Lior[/name_u] nn [name_u]Lee[/name_u] may be a better pick, I assumed this was a girl’s name when I first saw it
[name_u]Flynn[/name_u] - [name_m]Handsome[/name_m] and reminds me of [name_u]Flynn[/name_u] [name_u]Ryder[/name_u] from [name_f]Rapunzel[/name_f]
[name_m]Silas[/name_m] - Much prefer this spelling, think he’s rugged and cute although his popularity is soaring
[name_u]Larkin[/name_u] - This is more of a girl’s name to me, but I like having [name_u]Lark[/name_u] as a nn rather than the full name
Conclusion:
[name_f]My[/name_f] favorites in general:
[name_f]Saoirse[/name_f]
[name_f]Clara[/name_f]
[name_f]Althea[/name_f]
[name_u]Callum[/name_u]
[name_m]Sylvan[/name_m]
[name_f]My[/name_f] Favorites for you:
[name_f]Saoirse[/name_f]
[name_f]Fiadh[/name_f]
[name_f]Euna[/name_f] (YOU-nuh pronunciation)
[name_u]Callum[/name_u]
[name_m]Sylvan[/name_m]