[name_u]Elliott[/name_u] and [name_m]Alister[/name_m]
or
[name_u]Elliott[/name_u] and [name_m]Callum[/name_m]
From your updated list, I like [name_m]Callum[/name_m] [name_u]Elias[/name_u] and [name_m]Gideon[/name_m] [name_m]Maxwell[/name_m]. I really like [name_m]Jack[/name_m], too - I’m just not sure about the middle names. Maybe [name_m]Alexander[/name_m]? [name_f]May[/name_f] be too “a”-sound heavy, though.
Have you considered [name_m]Oliver[/name_m] with [name_u]Elliott[/name_u]? I think that would be super sweet!
Added a new poll. Let us know your thoughts or if you have any new suggestions. Big brother’s name is [name_u]Elliott[/name_u] [name_m]Matthew[/name_m].
[name_m]Asher[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]
[name_m]Asher[/name_m] [name_u]James[/name_u] [name_u]Luce[/name_u]
[name_m]Callen[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]
[name_m]Callen[/name_m] [name_u]James[/name_u] [name_u]Luce[/name_u]
[name_u]Evan[/name_u] [name_m]Alexander[/name_m] [name_u]Luce[/name_u]
[name_u]Evan[/name_u] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]
[name_u]Evan[/name_u] [name_u]James[/name_u] [name_u]Luce[/name_u]
[name_m]Gideon[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]
[name_m]Gideon[/name_m] [name_u]James[/name_u] [name_u]Luce[/name_u]
[name_m]Aaron[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]
I like the flow of [name_m]Gideon[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u] and [name_u]Evan[/name_u] [name_m]Alexander[/name_m] [name_u]Luce[/name_u]. I went with [name_m]Gideon[/name_m] to give him a different initial. I also really like [name_m]Asher[/name_m] though.
I love [name_m]Gideon[/name_m] with both your surname and your other son’s name. [name_m]Gideon[/name_m] [name_m]Maxwell[/name_m] got my vote.
[name_m]Gideon[/name_m] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u] is a spunky-sweet under-the-radar classic, just like [name_u]Elliott[/name_u]. I vote for that a million percent. It flows so well! [name_m]Gideon[/name_m] is more timeless than [name_m]Asher[/name_m] is. Same with [name_u]Elliott[/name_u]! So I’m not sure that [name_m]Asher[/name_m] would be perfectly matched with [name_u]Elliott[/name_u] - at least, not to the same extent that [name_m]Gideon[/name_m] would be.
I like [name_u]Evan[/name_u], but [name_m]Asher[/name_m] goes great with big brother [name_u]Elliot[/name_u]!
[name_m]Aaron[/name_m] 
very beautiful !
[name_m]Alexander[/name_m], no. I prefer [name_m]Alec[/name_m]
Alyas, no. Too “Alias”. I prefer [name_u]Elias[/name_u] but it’s too close to [name_u]Elliott[/name_u]. Maybe [name_m]Atlas[/name_m] ?
[name_m]Aren[/name_m], why not
[name_u]Ari[/name_u], I prefer [name_m]Harry[/name_m]
[name_m]Asher[/name_m], [name_u]Barrett[/name_u], Baren, [name_m]Callan[/name_m], [name_m]Callum[/name_m], [name_u]Colby[/name_u], Cowan = 
[name_m]Eliam[/name_m], my favorite but it’s too close to [name_u]Elliott[/name_u]. I prefer [name_m]Liam[/name_m].
[name_m]Ethan[/name_m], [name_u]Evan[/name_u], [name_m]Gideon[/name_m], [name_m]Jack[/name_m], [name_u]Justice[/name_u], [name_u]Lane[/name_u], [name_m]Ryder[/name_m], [name_m]Talan[/name_m] =
[name_m]Maxwell[/name_m]
I like:
[name_u]Elliott[/name_u] & [name_m]Aaron[/name_m]
[name_u]Elliott[/name_u] & [name_m]Maxwell[/name_m]
I voted for [name_m]Callan[/name_m] [name_u]James[/name_u] [name_u]Luce[/name_u]. I like the nn Call (pr. k-ell, not like the word “call”). I also really like the name [name_u]Evan[/name_u] [name_m]Maxwell[/name_m] [name_u]Luce[/name_u]. That sounds very nice together. But I do prefer Call Not a fan of [name_m]Asher[/name_m] at all.
[name_m]Gideon[/name_m] [name_u]James[/name_u] & [name_u]Elliott[/name_u] [name_m]Matthew[/name_m] are my pick!
What middle name would everyone suggest with [name_m]Oliver[/name_m]?
[name_m]Oliver[/name_m] [name_u]James[/name_u] [name_u]Luce[/name_u]
[name_m]Oliver[/name_m] [name_m]William[/name_m] [name_u]Luce[/name_u]
[name_m]Oliver[/name_m] [name_m]Miles[/name_m] [name_u]Luce[/name_u]
[name_m]Oliver[/name_m] [name_m]Henry[/name_m] [name_u]Luce[/name_u]
[name_m]Oliver[/name_m] [name_m]Andrew[/name_m] [name_u]Luce[/name_u]
My favourite name on your list is [name_m]Gideon[/name_m], but with big brother [name_u]Elliott[/name_u], I like [name_m]Asher[/name_m] best. [name_u]Elliott[/name_u] and [name_m]Asher[/name_m] - very handsome together!