Looks like we have similar naming taste, so I'll share my favorites:

Gage

Landon

Hayden

Levi

Joel

Spencer

Good luck!

Can you give us some hints about the sound of your last name?

Based on Noah and Lyla, my suggestion is Jonah. Or Jonas?

Of those you listed Mason is the best for me. I also like the suggestions of Gage, and Spencer.

Jonah or Jonas would be to close to Noah for me.

I like all your name choices--for the boys, my favorites on your list are Will and Charlie, but I would be strongly inclined to put full names (William and Charles) on the birth certificate--it gives the kids a more serious name to fall back on, and gives them more flexibility (I have heard people regretting that their parents did not give them a full name, but I have never heard the opposite, of people wishing that they had only a nn as their official name).  I do adore both Will and Charlie as nns, though--sweet and handsome.  Jack is great, too, but it seems to me that young Jacks are absolutely everywhere right now, so if that bothers you I'd avoid it.  Mason is perfectly nice, too, but feels less classic than your other boy choices.

Eli, Evan, Ian, Jude, Miles, Marcus, Owen, Caleb, Gavin?

I agree that Mason seems to fit the best but I also think Charlie and Will work. I though of Max immediately and also Lucas/Luke.

Lst name starts with BR and is two syllables. Thanks for all the suggestions!

All your names are currently popular; Will, Charlie and Jack have a lot of history (and feel very "English," in contrast to Old Testament Noah), while Mason and Lyla are more recent favorites (and Noah's status as a megahit is more recent though of course the name itself is very old). What ties them together, I think, is that they feel friendly and familiar.

What comes to my mind (like your list, mostly a mix of familiar biblicals, old but not too stuffy English names and surnames, plus a few other that seemed to fit):

Aaron, Adam, Aidan, Benjamin, Bennett, Caleb, Carter/Carson, Chase, Colin, Connor, Cooper,

Daniel, David, Eli, Eric, Ethan, Evan, Graham, Gray(son), Henry, Hunter, Isaac,

Jackson, Jacob, James, Jason, Jonathan, Joseph, Kyle, Levi, Luke, Mark, Matthew, Max, Oliver,

Paul, Peter, Robert, Roger, Ryder, Samuel, Sawyer, Timothy, Toby/Tobias, Tyler, Wesley, Zachary

I agree with hyz that I'd put the full names William and Charles on the birth certificate. That also gives you and your son the flexibility of choosing different nicknames (Bill/Billy, Liam, Wim; Chaz, Chuck) or going by the whole thing if it turns out to fit better. I've heard people with nicknames for given names complain that people often assume they have the long form as an official name, and it can get annoying have to correct them. I think Jack works fine on its own though.

Joel, Jonah and Owen seem to fit too, but I think they sound too similar to Noah.

Hope that helps!

We have a Jack.

It is, indeed, popular, though he has yet to have a duplicate in his class.

If popularity is a concern, you might rule out Mason, only because of all the boys with n ending names.

I adore Charlie and Will. Like others, I'd use a "long," name to give options.

I'll just give you a few others on my imaginary list, on the off chance we have similar taste.

Sameul/Sam

Dashiell/Dash

Thomas/Tom

Others I liked that were vetoed by dh were Spencer and Tobias (Toby)

We also considered Owen, Wes, West, and Shepard (that last one might have been the hormones).

Jared, do you like that one? i think it sounds good with Noah or another air sounding name like Derek.

My initial instinct was Mason.  It just seems to go with Noah.  Will, Charlie and Jack are nicknames and people will always be asking if the names are really William, Charles or Jackson.