Sapphire - This is cool! Not my style though, and I think there are much more usable names on your list.
Avia - [name_m]How[/name_m] interesting! I’ve never heard of this name before, only [name_f]Ava[/name_f]. [name_f]Avia[/name_f] is pretty! Reminds me a little of aviation, but that’s not necessarily a bad thing.
Tova - Once again, how interesting! This is gorgeous and very unusual, at least where I’m from. One of the highlights of your list imo.
Saoirse - This is probably my least favourite on your list. For some reason, no matter how many times I see the pronunciation written out for me, I always blank and stumble on how to pronounce it!
Flora - [name_u]Light[/name_u] and sweet, I love it! I’ll suggest [name_f]Florence[/name_f] for you as well, though it might be a bit vintage for your taste.
Marisol - Another highlight! So elegant, and will age so well. I’ll suggest [name_f]Marigold[/name_f], which personally, I do prefer to [name_f]Marisol[/name_f].
Rosalia - Beautiful name, but I do prefer [name_f]Rosalie[/name_f] - it seems a little less ‘frilly.’
Iris - This is vintage and sweet! A little too vintage for my personal taste, but definitely usable.
Dalia - I do like it, but at first I thought you’d just misspelled [name_f]Dahlia[/name_f]! [name_f]Dalia[/name_f] does seem like a fresher version of [name_f]Dahlia[/name_f], but I think my familiarity with [name_f]Dahlia[/name_f] means I like the [name_f]Dahlia[/name_f] spelling a little more.
Poppy - Another highlight- so bright and fun! Could work as a nickname for [name_f]Penelope[/name_f] too.