Congratulations on your twins! I just want to say, the nickname ‘[name_f]Sisi[/name_f]’ for [name_u]Sierra[/name_u] is a wonderful surprise. It gave me a bit of a thrill to see it.
From your girls shortlist, [name_f]Aviva[/name_f] stands out above the rest. I really like the way it shares a nature meaning with [name_u]Sierra[/name_u], and hands down, it has the wow factor. I think [name_f]Aviva[/name_f] and [name_u]Juniper[/name_u] would be a great twin pairing, again for the subtle nature link, but also because [name_u]Juniper[/name_u] still feels quite fresh and unexpected while some of the other names on your list have been in popular use for a while longer, and finally, each child gets their own initial. [name_u]Sierra[/name_u], [name_f]Aviva[/name_f] and [name_u]Juniper[/name_u]. An eclectic mix of names that still makes sense together. For middles, you have some lovely family names to choose from. I think any of these combinations are fantastic; [name_f]Aviva[/name_f] [name_f]Dawn[/name_f] /[name_f]Aviva[/name_f] [name_u]Rae[/name_u], [name_u]Juniper[/name_u] [name_u]Anne[/name_u] /[name_u]Juniper[/name_u] [name_f]Dawn[/name_f]/ [name_u]Juniper[/name_u] [name_u]Rae[/name_u].
From your boys shortlist, I think you could really do any pairings since all the names seem very compatible in style (although I personally prefer twins to not so share initials to avoid being overly coordinated). I really like [name_u]Jude[/name_u] and [name_u]Ezra[/name_u] together since they are both sleek and tailored, and four letters long. They are a dashing pair. [name_u]Sierra[/name_u], [name_u]Jude[/name_u] and [name_u]Ezra[/name_u]. I’ve just noticed that [name_u]Sierra[/name_u] and [name_u]Ezra[/name_u] are a little similar; they share the same ‘eh’ vowel sound and ‘ra’ ending. But if you call your daughter [name_f]Sisi[/name_f] most of the time at home, I don’t think this is a large concern. [name_u]Jude[/name_u] [name_m]Darwin[/name_m] and [name_u]Ezra[/name_u] [name_u]Rae[/name_u]. I also like [name_m]Malachi[/name_m] and [name_u]Ezra[/name_u], linked through their biblical usage. [name_u]Maverick[/name_u] is a very big name; it’s bold, it has attitude. I think [name_u]Ezra[/name_u] also has the guts to stand beside a name like [name_u]Maverick[/name_u]. I think [name_u]Elliot[/name_u] could work too, I like that it also has three syllables, and perhaps [name_u]Jude[/name_u] as well. [name_u]Sierra[/name_u], [name_u]Jude[/name_u] and [name_u]Maverick[/name_u]. Have you thought about nicknames for [name_u]Maverick[/name_u]? That could help lessen the grandeur, something like [name_u]Mack[/name_u] or [name_m]Mick[/name_m]. [name_f]Sisi[/name_f], [name_u]Mack[/name_u] and [name_m]Leo[/name_m]. I also like [name_u]Jude[/name_u] and [name_u]Elliot[/name_u] together. They’re very charming. [name_u]Sierra[/name_u], [name_u]Jude[/name_u] and [name_u]Elliot[/name_u]. It seems I really like [name_u]Jude[/name_u] for you!
For one of each, and sticking with my favourite girl options, I’d pair [name_f]Aviva[/name_f] ([name_f]Dawn[/name_f]) with [name_m]Malachi[/name_m] ([name_u]Rae[/name_u]). They look so cohesive probably because they share the same vowels, two a’s and an ‘i’, and they are both of Hebrew origin. In saying that, they don’t sound like too niche because [name_m]Malachi[/name_m] has been in popular usage for almost two decades and [name_f]Aviva[/name_f], being quite rare, probably won’t have any existing associations for most people. [name_u]Sierra[/name_u], [name_f]Aviva[/name_f] and [name_m]Malachi[/name_m]. There are nicknames in there too, [name_f]Viv[/name_f] /[name_f]Viva[/name_f], [name_m]Mac[/name_m] /[name_f]Mally[/name_f] / [name_u]Kai[/name_u]. With [name_u]Juniper[/name_u] ([name_u]Rae[/name_u]), I think [name_u]Elliot[/name_u] ([name_m]Darwin[/name_m]) sounds best. [name_u]Sierra[/name_u], [name_u]Juniper[/name_u] and [name_u]Elliot[/name_u]. [name_f]Sisi[/name_f], [name_u]June[/name_u] and [name_m]Leo[/name_m]. They are fabulous together. From my favourite boy options, I like [name_u]Jude[/name_u] ([name_m]Darwin[/name_m]) with [name_f]Scarlett[/name_f] ([name_u]Rae[/name_u]). Both vintage revivals, a little bit western, and have that tailored feel. [name_u]Sierra[/name_u], [name_u]Jude[/name_u] and [name_f]Scarlett[/name_f]. [name_f]Sisi[/name_f], [name_u]Jude[/name_u] and [name_u]Scout[/name_u].
I don’t want to add any more names because I think you have excellent lists already. I hope you’ll update us when the time comes. All the best.