If you haven’t seen my other post, [name]Kacee[/name] and [name]Maegan[/name] are my older girls.
[name]Brooke[/name]: I think [name]Brooke[/name] is pretty dated, but that’s just me. 
[name]Hayden[/name]: I think [name]Hayden[/name] works with your daughters’ names, but it’s really trendy, and part of the -ayden meganames trend ([name]Aiden[/name], [name]Jayden[/name], [name]Brayden[/name], [name]Cayden[/name], etc.)…
[name]Stella[/name]: I love [name]Stella[/name], but its more vintage style differs from your daughters’ modern names.
[name]Peyton[/name]: I think this one works with your daughters’ names, too, but I’m just personally not a fan.
[name]Lydia[/name]: I love [name]Lydia[/name], but I can’t see this classic name with [name]Maegan[/name] and [name]Kacee[/name].
[name]Emerson[/name]: I can see this with your daughters’ names (just not personally a fan)…
[name]Leah[/name]: I do think [name]Leah[/name] is feeling dated already, but I think it’s pretty and can see it with your daughters’ names.
[name]Olivia[/name]: If popularity doesn’t bother you (it’s seriously popular), I think [name]Olivia[/name] is lovely!
[name]Grace[/name]: With a [name]Kacee[/name], I’d avoid [name]Grace[/name], because it has the same “ace” sound, which makes them sound too much alike. [name]Kace[/name] and [name]Grace[/name] rhyme.
[name]Demi[/name]: This one is all [name]Demi[/name] [name]Moore[/name] and even [name]Demi[/name] Lovato to me, and I personally don’t think it’s great with your last name.
[name]Anna[/name]: I think [name]Anna[/name] is so pretty, and although it’s a classic, I can kind of see it with your daughters’ names.
From your list, I think [name]Leah[/name] and [name]Olivia[/name] work best with your daughters’ names, because their popularity gives them a more modern feel.
More classic/vintage names that could work with your daughters’ names, primarily because of their popularity:
[name]Audrey[/name]
[name]Belle[/name]
[name]Ella[/name] (very, very popular)
[name]Natalie[/name]
[name]Ruby[/name]
[name]Tessa[/name]
I’m thinking [name]Lola[/name] and [name]Sasha[/name] could work, too…
More modern names (sorry for any repeats from your other post):
[name]Camden[/name] (nn [name]Cammie[/name])
[name]Darby[/name]
[name]Finley[/name]
Isaly
[name]Jansen[/name]/[name]Jensen[/name]
[name]Riley[/name]
[name]Reese[/name] (although it has the see sound of [name]Kacee[/name]…)
Good luck!