Our short list: (yes, it’s all over the place)
[name_m]Luke[/name_m]
[name_u]Bryce[/name_u]
[name_u]Asa[/name_u]
[name_m]Crispin[/name_m]
[name_m]Evander[/name_m]
[name_m]Jonah[/name_m]
We have a [name_f]Julia[/name_f] [name_f]Charlotte[/name_f] & [name_m]Silas[/name_m] [name_m]Oliver[/name_m]. Middle name will likely be either [name_m]Nicholas[/name_m], [name_m]Cole[/name_m], [name_m]Colin[/name_m], or [name_m]Scott[/name_m].
I adore/love:
[name_m]Luke[/name_m]
[name_u]Bryce[/name_u]
[name_m]Crispin[/name_m]
I love [name_m]Luke[/name_m], [name_u]Asa[/name_u], and [name_m]Jonah[/name_m]. [name_u]Bryce[/name_u] and [name_m]Evander[/name_m] are okay but not my favorite. [name_m]Crispin[/name_m] is the only one I don’t care for.
I really like [name_m]Crispin[/name_m], [name_m]Luke[/name_m], and [name_m]Evander[/name_m]. I would say that [name_m]Luke[/name_m] fits best with [name_f]Julia[/name_f] and [name_m]Silas[/name_m], though.
I really like [name_m]Luke[/name_m] and [name_m]Evander[/name_m] with your other kids’ names, although I think [name_m]Luke[/name_m] fits best. Although I love [name_u]Asa[/name_u], it shares the “s” with [name_m]Silas[/name_m] and they sound a bit too similar.
Thoughts:
[name_m]Luke[/name_m] - Not a bad name but doesn’t have the same feel as [name_f]Julia[/name_f] and [name_m]Silas[/name_m], feels too nicknamey in comparison.
[name_u]Bryce[/name_u] - I like the sound, but it seems a lot more modern than the other kids’ names.
[name_u]Asa[/name_u] - Personally not fond of [name_u]Asa[/name_u].
[name_m]Crispin[/name_m] - I love [name_m]Crispin[/name_m]! It is a bit rarer, but seems familiar since [name_m]Christopher[/name_m]/[name_u]Chris[/name_u]/[name_m]Christian[/name_m] are so popular.
[name_m]Evander[/name_m] - Also love, but it’s a bit more out there.
[name_m]Jonah[/name_m] - Like, but shares both a J start and a “ah” end with [name_f]Julia[/name_f].
Overall my favorite off here would probably be [name_m]Crispin[/name_m]. Maybe [name_m]Evander[/name_m] could work too.
Combo Ideas:
[name_m]Crispin[/name_m] [name_m]Scott[/name_m]*
[name_m]Crispin[/name_m] [name_m]Nicholas[/name_m]
[name_m]Evander[/name_m] [name_m]Nicholas[/name_m]
[name_m]Evander[/name_m] [name_m]Cole[/name_m]*
[name_m]Evander[/name_m] [name_m]Scott[/name_m]
Starred names are my favorite combos.
[name_u]Love[/name_u] [name_u]Asa[/name_u]! [name_m]Luke[/name_m] and [name_m]Jonah[/name_m] are great too. Congrats and good luck!
I really like [name_u]Asa[/name_u] and [name_m]Evander[/name_m].
[name_m]Crispin[/name_m] is my favorite. I like the sound of [name_m]Crispin[/name_m] [name_m]Scott[/name_m].
[name_m]Crispin[/name_m] is such a cool name! I think any of those names go well with the subs. Second favorite is [name_m]Jonah[/name_m]. [name_m]Crispin[/name_m] is really something special, though 
With [name_f]Julia[/name_f] and [name_m]Silas[/name_m], I like [name_m]Luke[/name_m] and [name_m]Evander[/name_m]…though [name_u]Asa[/name_u] is a fabulous and under-used name!
Wow mixed bag! After talking over with my hubby, I think we’ve narrowed it down to [name_m]Crispin[/name_m] and [name_u]Asa[/name_u]. I prefer [name_m]Crispin[/name_m] and he’s sort of “sold” on [name_u]Asa[/name_u]. I won’t fight too hard until we find out the gender!
I love your final two options! I think [name_u]Asa[/name_u] fits well stylistically, especially with [name_m]Silas[/name_m], but I love [name_m]Crispin[/name_m] in the sibset because it adds a different sound profile. Either way, I think your choices are lovely!