Milo & [name_f]Vivienne[/name_f] are lovely.
Here are my thoughts on your list:
Dashiell-This is such a cool name. It’s totally unique, but not weird or too out there. And the nn [name_u]Dash[/name_u] is certainly spunky!
Jonas-I want to like this, but just don’t like the sound that much. Not sure why? It’s different & simple. [name_m]Just[/name_m] not my favorite. I prefer [name_u]Jonah[/name_u], but that’s really popular.
Wells-It’s interesting. Not my total favorite, but it’s kind of charming & different. I kind of like it as a nn for [name_u]Maxwell[/name_u].
Reid-Meh, I don’t know. I don’t think it’s that spunky. Sounds a little bland to me.
A few boy ideas that you may like-
Otis-[name_u]Milo[/name_u] & [name_m]Otis[/name_m] is a really cute reference.
Beatrix-I love [name_f]Beatrix[/name_f]! It’s the perfect balance feminine, interesting, classic & spunky. Super unique too, but not at all complicated. And really cute w/Milo & [name_f]Vivienne[/name_f].
Maeve-This is beautiful. Simple & elegant & kind of pixie-ish.
Genevieve-I think that it’s a little too close to [name_f]Vivienne[/name_f]. And a little fussy in my opinion.
A few girl suggestions-
Hope this helps.