We’re having a girl after two boys so you think we would have a girl name picked out…but no. We both like [name_f]Emma[/name_f], [name_f]Juliette[/name_f], [name_u]Payton[/name_u] and [name_f]Katherine[/name_f]. I’m digging on [name_f]Hallie[/name_f] (rhymes with [name_f]Sally[/name_f]), [name_u]Embry[/name_u] (yes, I know “embryo”), [name_f]Eliza[/name_f] and [name_f]Isla[/name_f]. He likes [name_f]Sophia[/name_f] and [name_u]Piper[/name_u]. Nothing screams, “that’s it!” Any suggestions are welcome 
I know a [name_m]Liam[/name_m] with sister [name_u]Galen[/name_u].
[name_f]Emma[/name_f] and [name_f]Katherine[/name_f] are too common and dated (1990s) for my taste. [name_u]Payton[/name_u] and [name_u]Embry[/name_u] aren’t my taste, either- they’re a little too recently-invented sounding. [name_f]Sophia[/name_f] is INSANELY common right now. Like, expect your daughter to have 5 other Sophias in her class.
I really like [name_f]Eliza[/name_f], [name_f]Isla[/name_f], [name_f]Juliette[/name_f] (though I prefer [name_f]Juliet[/name_f]), and [name_f]Hallie[/name_f]. [name_f]Hallie[/name_f], though, feels incomplete, like it should be a nickname for something. Halliwell? Halinor? Halen? [name_u]Halcyon[/name_u]?
What about [name_f]Fiona[/name_f]? [name_f]Fiona[/name_f] and [name_m]Liam[/name_m] both have that Irish feel.
[name_m]How[/name_m] about [name_f]Harriet[/name_f], nicknamed Haddie?
[name_f]Isla[/name_f] is my favorite of your options. I like how the “l” sound would link all three names. I think Hallie works well too. Other ideas for you:
[name_f]Claire[/name_f]
[name_f]Abigail[/name_f]
[name_f]Caroline[/name_f]
[name_f]Mallory[/name_f]
Natalie
Molly
Delaney
My favourite from your list is [name_f]Eliza[/name_f] but perhaps it’s too similar to [name_u]Elliott[/name_u] - other ideas …
[name_m]Liam[/name_m], [name_u]Elliott[/name_u] and
[name_u]Aubrey[/name_u]
[name_f]Alicia[/name_f]
[name_f]Bethany[/name_f]
[name_f]Cara[/name_f]
[name_f]Chloe[/name_f]
[name_f]Celeste[/name_f]
[name_u]Everly[/name_u]
[name_f]Elysia[/name_f] (again maybe too similar to [name_u]Elliott[/name_u])
[name_f]Florence[/name_f]
[name_f]Freya[/name_f]
[name_f]Gabriella[/name_f]
[name_f]Harriet[/name_f]
[name_f]Ivy[/name_f]
Joelie
[name_u]Josie[/name_u]
[name_f]Lola[/name_f]
[name_f]Laila[/name_f]
[name_f]Margot[/name_f]
[name_f]Martha[/name_f]
[name_f]Orla[/name_f]
[name_f]Rosie[/name_f]
[name_f]Serena[/name_f]
[name_f]Vivienne[/name_f]
[name_f]Verity[/name_f]
X
The three names that stand out as distinctive for your tastes as a couple are: [name_u]Payton[/name_u], [name_f]Hallie[/name_f], and [name_u]Piper[/name_u]. Some of your choices are traditional, but I get the feeling that you want something a little fresher, with spunky energy. Maybe you could use a traditional name for a middle ([name_f]Juliette[/name_f], [name_f]Katherine[/name_f], or [name_f]Eliza[/name_f])
Here are some brainstormed suggestions
[name_f]Hallie[/name_f] [name_f]Katherine[/name_f]
[name_u]Payton[/name_u] [name_f]Juliette[/name_f]
[name_u]Piper[/name_u] [name_f]Katherine[/name_f]
[name_u]Marley[/name_u] [name_f]Eliza[/name_f]
[name_u]Emery[/name_u] [name_f]Katherine[/name_f]
[name_u]Presley[/name_u] [name_f]Juliette[/name_f]
[name_u]Sydney[/name_u] [name_f]Katherine[/name_f]
[name_u]Reagan[/name_u] [name_f]Eliza[/name_f]
[name_u]Riley[/name_u] [name_f]Juliette[/name_f]
[name_u]Emerson[/name_u] [name_f]Sophia[/name_f]
[name_u]Harper[/name_u] [name_f]Katherine[/name_f]
[name_f]Phoebe[/name_f] [name_f]Juliette[/name_f]
Oh, how I love [name_m]Liam[/name_m], [name_u]Elliott[/name_u] and [name_f]Juliette[/name_f]!
[name_u]Payton[/name_u], [name_u]Embry[/name_u] & Pipe - too trendy with [name_m]Liam[/name_m] & [name_u]Elliott[/name_u]
[name_f]Katherine[/name_f], [name_f]Emma[/name_f], [name_f]Eliza[/name_f] & [name_f]Sophia[/name_f] - these work well, too, but don’t have the pizzazz of [name_f]Juliette[/name_f]. Of these I prefer [name_f]Eliza[/name_f] But [name_m]Liam[/name_m], [name_u]Elliott[/name_u] & [name_f]ELiza[/name_f] is a mouthful of L’s!
[name_f]Hallie[/name_f] - sounds like a nickname.
[name_f]Isla[/name_f] - doesn’t work with the brothers’ names.