Here is my list so far!!! Looking for something to flow with our two boys [name_u]Julian[/name_u] and [name_m]Leo[/name_m]. I’m not sure what my style is but I don’t like too popular!
[name_u]Micha[/name_u]
[name_m]Roman[/name_m]
[name_m]Lucas[/name_m]
[name_u]Gabriel[/name_u]
[name_u]Cameron[/name_u]
I love your kids’ names! From your list, [name_m]Lucas[/name_m] and [name_u]Gabriel[/name_u] are my favorite. They flow well with [name_u]Julian[/name_u] and [name_m]Leo[/name_m], but each of them have a different sound. [name_u]Micha[/name_u] is cute as well, but the [name_u]Micah[/name_u] spelling is my favorite, but I love the name regardless. Some other ideas are
Felix
[name_m]Theodore[/name_m] (full name sounds great, but [name_u]Theo[/name_u] and [name_m]Leo[/name_m] are very similar)
[name_u]Jasper[/name_u] (I love this name)
[name_m]Henry[/name_m]
[name_u]August[/name_u]/Augustus
[name_u]Miles[/name_u]
[name_m]Isaac[/name_m]
[name_u]Jonah[/name_u]
[name_u]Levi[/name_u]
[name_u]Finley[/name_u]
[name_m]Hugh[/name_m]
[name_m]Elijah[/name_m]
[name_u]Arlo[/name_u] (still has the -o sound like [name_m]Leo[/name_m] but I adore this name)
I hope I was some help! Congratulations!
I think [name_u]Gabriel[/name_u] is perfect with [name_u]Julian[/name_u] and [name_m]Leo[/name_m]!
Maybe you would also like…
[name_m]Nicolas[/name_m]
[name_u]Francis[/name_u]
[name_u]Quentin[/name_u]
[name_u]Barrett[/name_u]
[name_m]Victor[/name_m]
[name_u]Everett[/name_u]
What about:
[name_u]Archer[/name_u]
[name_u]August[/name_u]
[name_m]Abel[/name_m]
[name_u]Beau[/name_u]
[name_u]Bennett[/name_u]
[name_m]Cyrus[/name_m]
[name_u]Callum[/name_u]
[name_u]Callahan[/name_u]
[name_m]Casper[/name_m]
[name_m]Duncan[/name_m]
[name_m]Desmond[/name_m]
[name_u]Drew[/name_u]
[name_u]Elliot[/name_u]
[name_u]Flynn[/name_u]
[name_u]Finn[/name_u]
[name_m]Franklin[/name_m]
[name_u]Griffin[/name_u]
[name_m]Grant[/name_m]
[name_m]Harris[/name_m]
[name_m]Harrison[/name_m]
[name_m]Harvey[/name_m]
[name_m]Joel[/name_m]
[name_u]Jude[/name_u]
[name_u]Kieran[/name_u]
[name_u]Kai[/name_u]
[name_u]Lennon[/name_u]
[name_u]Maxwell[/name_u]
[name_u]Miles[/name_u]
[name_m]Nate[/name_m]/Nathaniel
[name_u]Orion[/name_u]
[name_u]Percy[/name_u]
[name_u]Rory[/name_u]
[name_u]Remy[/name_u]
[name_m]Ruben[/name_m]
[name_u]River[/name_u]
[name_m]Soren[/name_m]
[name_u]Spencer[/name_u]
[name_u]Sullivan[/name_u]
[name_m]Simon[/name_m]
[name_m]Tobias[/name_m] or [name_u]Toby[/name_u]
[name_m]Xander[/name_m]
[name_m]Zane[/name_m]
I really like [name_m]Lucas[/name_m] and [name_u]Gabriel[/name_u] from your list!
How about [name_u]Jonah[/name_u] or [name_u]Owen[/name_u]? Both have a strong ‘o’ sound that would go well with your [name_m]Leo[/name_m]’s name
Thanks for the reply and compliment on my boys names! I actually like your way of spelling [name_u]Micah[/name_u] better. I have a plot twist on [name_u]Gabriel[/name_u], it’s actually my maiden name but mine is spelled [name_u]Gabriele[/name_u], would it be weird to use that spelling or nice?!
That is adorable! I do think that the [name_u]Gabriele[/name_u] spelling would be pronounced like [name_f]Gabrielle[/name_f] instead of [name_u]Gabriel[/name_u], but I think all it takes is a simple correction! However if it would worry you that it would be mispronounced, use [name_u]Gabriel[/name_u]. It is still a very sweet allude to your maiden name!
Micha and [name_u]Gabriel[/name_u] are my favorites from your list. [name_u]Julian[/name_u] and [name_m]Leo[/name_m] are def two classics for me and I adore them! 
best of luck!
I like [name_m]Lucas[/name_m] the best from your list.
Maybe:
[name_u]Eli[/name_u]
[name_m]Alexander[/name_m]
[name_u]Sasha[/name_u] / [name_u]Sacha[/name_u]
[name_m]Felix[/name_m]
[name_m]Greg[/name_m] / [name_m]Gregory[/name_m]
[name_u]Remy[/name_u]
[name_m]Vincent[/name_m] “[name_u]Vinnie[/name_u]”
[name_m]Henry[/name_m]
[name_u]Finn[/name_u]
[name_u]Camille[/name_u]
[name_u]Florian[/name_u]
[name_m]Otis[/name_m]
[name_m]Rufus[/name_m]
[name_u]Evan[/name_u]
[name_u]Freddie[/name_u]
xx
Julian, [name_m]Leo[/name_m], & [name_m]Garrett[/name_m] was the first thing that came to mind
From your list I love [name_u]Micha[/name_u]
Julian, [name_m]Leo[/name_m], & ______:
Griffin
[name_u]Beckett[/name_u]
[name_u]Remy[/name_u]
[name_u]Tanner[/name_u]
[name_u]Kyler[/name_u]
[name_u]Orion[/name_u]
[name_u]Spencer[/name_u]
[name_u]Bodhi[/name_u]
[name_m]Desmond[/name_m]
[name_m]Felix[/name_m]
[name_m]Cyrus[/name_m]
[name_m]Malcom[/name_m]
[name_m]Franklin[/name_m]
Hi there.
Julian & [name_m]Leo[/name_m] are charming.
Here are my thoughts on your list:
Micha-Is this like Mee-sha or [name_m]Mike[/name_m]-uh? If it’s the latter, I’d go w/Micah. Either way, it’s not my favorite. It’s fine, & I can’t pinpoint why I don’t like it.
Roman-I think that this fits w/your boys’, but it’s just a little heavy in my opinion.
Lucas-This fits well too, & is a good name. It is very popular, however.
Gabriel-This is also pretty common, but a beautiful classic. [name_u]Love[/name_u] it w/Julian & [name_m]Leo[/name_m].
Cameron-This is okay. I think it’s fairly unisex, which I don’t love. It also feels modern next to the classic [name_u]Julian[/name_u] & [name_m]Leo[/name_m].
Sorry for any repeats, but here are a few suggestions:
Asher
Archer
August
Bennett
Crispin
Desmond
Dexter
Dominic
Elliott
Holden
Isaac
Luca
Nathaniel
Oscar
Peter
Rafael
Rafe
Rowan
Simon
Tristan
Vincent
Hope this helps.
I think [name_u]Gabriel[/name_u] fits nicely!
I like [name_u]Gabriel[/name_u] best with [name_u]Julian[/name_u] and [name_m]Leo[/name_m]!
Other ideas…
[name_u]Taylor[/name_u]
[name_m]Ronan[/name_m]
[name_m]Lucian[/name_m]
[name_u]Nico[/name_u]
[name_m]Mathias[/name_m]
[name_m]Hugo[/name_m]
Gabriel. I like [name_u]Michael[/name_u] more than [name_u]Micha[/name_u] and think it matches better with the sibling names.
Id go with something with an L in it, for continuity.
Fromt Your List:
These are both great. Definitely my favorites, and my top choices for the sibset. Between the two, I was already leaning slightly towards [name_u]Gabriel[/name_u] when I saw your comment that [name_u]Gabriele[/name_u] is your maiden name – that bit of family connection would make the choice of [name_u]Gabriel[/name_u] sooo much more special!
Others You [name_f]May[/name_f] Like:
Second Tier:
I absolutely love [name_u]Gabriel[/name_u] or [name_m]Roman[/name_m] for you. They sound like they could be a brother to [name_m]Leo[/name_m] and [name_u]Julian[/name_u]
From your list I like [name_m]Lucas[/name_m] and [name_u]Micha[/name_u]
Some other suggestions…
Alexander “[name_u]Alex[/name_u]” or “[name_m]Xander[/name_m]”
[name_m]Xavier[/name_m]
[name_u]Tyler[/name_u]
[name_u]Jayden[/name_u]
[name_u]Jackson[/name_u]
[name_m]Simon[/name_m]
[name_m]Caleb[/name_m]
[name_u]Evan[/name_u]
[name_m]Arthur[/name_m]
[name_u]Mason[/name_u]
Best wishes! 
I love [name_u]Gabriel[/name_u]. First name that came to mind though was [name_u]Michael[/name_u].