Hi all. Here’s my list of girls names. Today I feel like I could reasonably use any of these and be fairly happy with my choice. Therefore, I will leave it up to you. Which name would you pick? Older brother is Liam. Surname is an Irish Mack name.
Kai
Matilda
Briar
Sage
Juniper
Daisy
Maisie
Kaia
Frankie
Sadie
Isla
Tallulah
Flora
Carys (probably more likely to be a middle name because husband isn’t a fan)
[name_f]Matilda[/name_f] [name_u]Juniper[/name_u]!
Briar Matilda or Flora Juniper
[name_f]Maisie[/name_f] [name_f]Tallulah[/name_f]!
Ooh I do like this! Very cute
I love [name_f]Sadie[/name_f], [name_f]Isla[/name_f], and [name_f]Maisie[/name_f] with [name_u]Liam[/name_u]! I think any one of them would work well with [name_f]Carys[/name_f] as a middle name 
[name_f]My[/name_f] favorites are
[name_f]Daisy[/name_f]
[name_f]Kaia[/name_f]
[name_f]Isla[/name_f]
[name_f]Tallulah[/name_f]
[name_f]My[/name_f] favorites are:
[name_f]Matilda[/name_f]
[name_f]Maisie[/name_f]
[name_f]Sadie[/name_f]
[name_f]Isla[/name_f]
[name_f]Flora[/name_f]
If it helps you narrow it down, [name_u]Kai[/name_u] is much more common for boys. (at least in the US) Good luck!
I love [name_f]Flora[/name_f] with [name_u]Liam[/name_u]!
I love [name_f]Matilda[/name_f], [name_f]Daisy[/name_f], [name_f]Kaia[/name_f], [name_u]Frankie[/name_u], [name_f]Sadie[/name_f], [name_f]Tallulah[/name_f] & [name_f]Carys[/name_f] from your list!
With big brother [name_u]Liam[/name_u] I think [name_f]Daisy[/name_f], [name_f]Kaia[/name_f], [name_u]Frankie[/name_u] & [name_f]Sadie[/name_f] fit best!
[name_f]Matilda[/name_f], [name_u]Frankie[/name_u] or [name_f]Flora[/name_f] get my vote although I also love [name_u]Sage[/name_u] (for either sex), [name_u]Juniper[/name_u] and [name_f]Tallulah[/name_f] (I also love [name_u]Kai[/name_u] but I prefer it for a boy). Your list is really lovely - I also like [name_f]Daisy[/name_f] and [name_f]Kaia[/name_f], and [name_u]Briar[/name_u] is growing on me. But with [name_u]Liam[/name_u] I think you can’t go past the first three I mentioned.
With [name_u]Liam[/name_u], my favourites are [name_f]Isla[/name_f] and [name_f]Daisy[/name_f]. I think [name_f]Flora[/name_f] and [name_f]Sadie[/name_f] go decently well with [name_u]Liam[/name_u] too.
You’ve got a great list! This is totally just for fun, but my personal favourites (although not necessarily with Liam) are:
[name_u]Kai[/name_u] (I absolutely adore [name_u]Kai[/name_u] for a girl, but I think it sounds more like a brother for [name_u]Liam[/name_u] due to the popularity of both names)
[name_u]Briar[/name_u]
[name_f]Daisy[/name_f]
[name_f]Kaia[/name_f]
[name_u]Frankie[/name_u]
[name_f]Isla[/name_f]
[name_f]Tallulah[/name_f]
[name_f]Flora[/name_f]
[name_f]Isla[/name_f] and [name_f]Flora[/name_f] fit the best with [name_u]Liam[/name_u] in my opinion 
[name_m]Hi[/name_m] there.
Here’s my favorite to least favorite:
Daisy-I love love love [name_f]Daisy[/name_f]. It’s probably my #1 name right now. It’s so cheerful & vintage & simple & lovable. It’s not terribly popular, but very well known. It goes quite nicely w/Liam, & probably your ln.
Flora-Simple & soft but kind of romantic too. [name_f]Vintage[/name_f] yet fresh. Not very popular. Goes great w/Liam & a ‘Mack’ ln.
Maisie-Even though I love just [name_f]Daisy[/name_f], I kind of feel like [name_f]Maisie[/name_f] is nick-name-y. But so cute anyway. It has all of the nice qualities of [name_f]Daisy[/name_f], & I think alliteration w/a ‘Mack’ ln is probably lovely. I like [name_f]Maureen[/name_f] or [name_f]Madeline[/name_f] nn [name_f]Maisy[/name_f]. [name_u]Or[/name_u] [name_f]Margaret[/name_f] or [name_f]Mary[/name_f] work too.
Tallulah-It’s so fun & charming & quirky but feminine & fun. Fairly easy but really unique. Cute w/Liam & a ‘Mack’ ln. Fun nns too like [name_u]Tali[/name_u], [name_f]Tula[/name_f], [name_f]Lula[/name_f] & [name_f]Lulu[/name_f].
Sadie-All of the same qualities as [name_f]Daisy[/name_f] & [name_f]Maisie[/name_f]. [name_m]Just[/name_m] doesn’t sparkle nearly as much, but a darling name.
Isla-Super popular, but for a good reason. It’s a beautiful name, & seems like a natural pair w/Liam.
[name_u]Juniper[/name_u]- I think that it’s kind of cute & spunky & has cool imagery. It’s getting oddly popular somehow! I feel like it’s a bit quirky w/the more down to earth [name_u]Liam[/name_u], but not a deal breaker. I love the nn [name_f]Junie[/name_f]. [name_u]June[/name_u] & [name_f]Juno[/name_f] are also good.
Matilda-I don’t mind it & it feels like it’d be good w/Liam & your ln. It feels kind of heavy to me for some reason. I do quite like the nn [name_f]Millie[/name_f].
Briar-I want to like it, because it’s an interesting flower name. I just don’t love the sound that much. Sounds too much like [name_m]Brian[/name_m].
Sage-I don’t really dislike it, but maybe it feels too modern for my tastes.
Kaia-Again, I kind of prefer vintage-er names, so this isn’t my favorite. It’s not unpleasant though.
Frankie-I can see the appeal of it, but it feels kind of boyish & kind of nick-name-y. What about [name_f]Frances[/name_f] or [name_f]Francesca[/name_f] nn [name_u]Frankie[/name_u]?
Carys-Meh, it’s not my cup of tea either. Can’t pinpoint why.
Kai-This seems way too boyish in my opinion.
[name_f]Hope[/name_f] my rambling helps. 
[name_f]Matilda[/name_f] [name_u]Briar[/name_u].
I LOVE [name_f]Sadie[/name_f] for you! It’s one of my favorite names and I feel it works perfectly with brother’s name. It’s just so sweet, stylish, and spunky!
[name_f]Matilda[/name_f] or [name_u]Frankie[/name_u]!
I would choose [name_u]Frankie[/name_u]!
[name_u]Frankie[/name_u] [name_f]Flora[/name_f], [name_u]Frankie[/name_u] [name_f]Tallulah[/name_f], [name_u]Frankie[/name_u] [name_u]Juniper[/name_u].
[name_f]Sadie[/name_f], [name_u]Briar[/name_u] and [name_f]Daisy[/name_f] go well with [name_u]Liam[/name_u].
Ooh, such a tough choice! I’d probably pick either [name_f]Flora[/name_f] or [name_f]Tallulah[/name_f] for you because they sound so lovely. And I also just think they would both sound adorable with a [name_u]Mack[/name_u] surname.
I think [name_f]Tallulah[/name_f] and [name_f]Isla[/name_f] would work PERFECTLY with [name_u]Liam[/name_u]. I love [name_f]Tallulah[/name_f] [name_f]Daisy[/name_f] and [name_f]Isla[/name_f] [name_f]Carys[/name_f] for you 