Thoughts on these additions?

I would like to ask of your thoughts on recent additions to my names list:
[name_m]Oswin[/name_m]/[name_m]Edwin[/name_m]
[name_u]Linden[/name_u]- too girly?
[name_m]Casper[/name_m]/[name_m]Caspar[/name_m]
[name_m]Colin[/name_m]
Alder/[name_u]Alden[/name_u]- to honour an [name_m]Alvin[/name_m]
[name_m]Roland[/name_m]

[name_f]Anika[/name_f]/[name_f]Anouk[/name_f]
[name_f]Zelia[/name_f]/[name_f]Zelie[/name_f]
[name_f]Merida[/name_f]
[name_f]Jasmine[/name_f]
[name_f]Nadia[/name_f]

[name_m]Oswin[/name_m]/[name_m]Edwin[/name_m] - I prefer [name_m]Edwin[/name_m], it sounds more modern and has a friendly nickname [name_m]Ed[/name_m]/[name_m]Eddie[/name_m].
[name_u]Linden[/name_u] - I think it can work. To my mind, nearly all nature names are unisex.
[name_m]Casper[/name_m]/[name_m]Caspar[/name_m] - I prefer [name_m]Jasper[/name_m] by far, but, out of this two, [name_m]Casper[/name_m]. [name_u]Cass[/name_u] or [name_m]Cash[/name_m] would be an adorable nickname.
[name_m]Colin[/name_m] - It sounds a bit dated, but nice. Has a solid, serious, cozy feel.
Alder/[name_u]Alden[/name_u] - [name_u]Alden[/name_u] can work, and Alder looks like a misspelling of [name_m]Adler[/name_m].
[name_m]Roland[/name_m] - [name_m]Roland[/name_m] had that clunky coolnes. I think it should be used more.

[name_f]Anika[/name_f]/[name_f]Anouk[/name_f] - [name_f]Anika[/name_f] is too frilly for me, and [name_f]Anouk[/name_f] is very [name_m]French[/name_m] chic. Makes me think of the Eiffel [name_m]Tower[/name_m] and hot chocolate.
[name_f]Zelia[/name_f]/[name_f]Zelie[/name_f] - I like [name_f]Zelia[/name_f] better, it seems very stylish and elegant.
[name_f]Merida[/name_f] - Definitely Disney, but due to its similarity to [name_f]Miranda[/name_f] it’s usable.
[name_f]Jasmine[/name_f] - [name_f]Jasmine[/name_f] is lovely, I also like [name_f]Jessamine[/name_f] a lot.
[name_f]Nadia[/name_f] - Too nicknamey. [name_f]Nadezhda[/name_f] is better, but nobody will pronounce it right, unfortunately.

[name_m]Oswin[/name_m]/[name_m]Edwin[/name_m] - I prefer [name_m]Edwin[/name_m]. However adding an a at the end, I like sowing and [name_f]Edwina[/name_f] much more for a girl than [name_m]Oswin[/name_m] or [name_m]Edwin[/name_m] for a boy.
[name_u]Linden[/name_u]- I don’t think it is too girly but I prefer the spelling [name_m]Lyndon[/name_m] for a boy (like the President).
[name_m]Casper[/name_m]-I really like this name. It does have great nickname potential.
[name_m]Colin[/name_m]- seems very common.
Alder/[name_u]Alden[/name_u]- I prefer [name_m]Alvin[/name_m] to either of your options. alder reminds me of a snake and [name_u]Alden[/name_u] seems like it would get mixed up with trendy [name_u]Aiden[/name_u] a lot.
[name_m]Roland[/name_m]- I like this name .

[name_f]Anika[/name_f]/[name_f]Anouk[/name_f]-[name_f]Anika[/name_f] has long been my favorite variation of [name_f]Ann[/name_f]. [name_f]Anouk[/name_f] makes me think of cold, frozen, desolute places.
[name_f]Zelia[/name_f]/[name_f]Zelie[/name_f]- [name_f]Zelia[/name_f] is unique but fits well with popularity of names like [name_f]Amelia[/name_f].
[name_f]Merida[/name_f]- this names seems incomplete. I much prefer [name_u]Meredith[/name_u].
[name_f]Jasmine[/name_f]-I immediately think of the Disney movie [name_m]Alladin[/name_m] but this is a lovely name and I like the nickname [name_u]Jaz[/name_u]
[name_f]Nadia[/name_f]-I like this name. It does make me think of Eastern Europe.

[name_m]Oswin[/name_m]/[name_m]Edwin[/name_m] - not sure which one I prefer here, probably [name_m]Edwin[/name_m], but I like them both, they’re very classy but would work well.
[name_u]Linden[/name_u] - [name_u]Linden[/name_u] is definitely not too feminine. To me it’s handsome but also soft and caring.
[name_m]Casper[/name_m]/[name_m]Caspar[/name_m] - once again, not sure which spelling I prefer. I’m going with [name_m]Casper[/name_m] for now, but I love the name.
[name_m]Colin[/name_m] - nice, but not really my style.
Alder/[name_u]Alden[/name_u]- to honour an [name_m]Alvin[/name_m] - prefer [name_u]Alden[/name_u], and I think is a nice way to honour [name_m]Alvin[/name_m].
[name_m]Roland[/name_m] - nms.

[name_f]Anika[/name_f]/[name_f]Anouk[/name_f] - prefer [name_f]Anouk[/name_f], there’s something soft but also powerful about this name, I’d love to see it on a little girl.
[name_f]Zelia[/name_f]/[name_f]Zelie[/name_f] - love both but slightly prefer [name_f]Zelie[/name_f]. The name reminds me of the word zesty which I think is cute and that’s how I would imagine a [name_f]Zelie[/name_f], strong and outgoing.
[name_f]Merida[/name_f] - reminds me of the Disney princess but it’s a nice namesake because as far as I know she is a strong young woman.
[name_f]Jasmine[/name_f] - very pretty, but it doesn’t do much for me.
[name_f]Nadia[/name_f] - really like. Very pretty and would work well on any age.

I like [name_m]Edwin[/name_m] better than [name_m]Oswin[/name_m].
I don’t care for [name_u]Linden[/name_u] – it does sound feminine.
[name_m]Casper[/name_m] is a very strong sounding name!
[name_m]Colin[/name_m] is so handsome!
I prefer [name_u]Alden[/name_u] to Alder, but it’s not my favorite.
[name_m]Roland[/name_m] sounds very dated to me.

I like [name_f]Anika[/name_f] better than [name_f]Anouk[/name_f]. It’s very pretty!
I don’t care for [name_f]Zelia[/name_f] or [name_f]Zelie[/name_f].
[name_f]Merida[/name_f] is too Disney.
[name_f]Jasmine[/name_f] is pretty, but it’s not my favorite.
Again, [name_f]Nadia[/name_f] is pretty, but not really my style.

Definitely keep [name_m]Edwin[/name_m], [name_m]Colin[/name_m], and [name_f]Anika[/name_f]!