No Scottish stuff... okay (my DP is Scottish so that's ruling out a LOT of our favourites!)
Looking back at your list, I like Caspar and Silas a lot. I didn't know Asa was a boy's name, I would have automatically assumed a girl's name but that's my ignorance.
Did a Nymbler search with your top three names and your DH's two names. Here are the top names (I've bolded the ones I like):
Ezra
Japheth
Augustus
Eli
Alexander (Scottish )
Asher
Caleb
Jabez
Zed
Jack
Benjamin
Leif
Napoleon
Aidan
Ignatius
Taking out your DH's choices the list looks like this:
Marcellus, Philo, Ephraim, Jasper, Lucian, Theophilus, Sinclair, Augustus, Ezra, Atticus, Leander, Adolphus, Montgomery, Simeon, Erastus
Typing in your two children's names you get:
Jesse, Mitchell, Caleb, Isaac, Zachary, Ari, Ian, Joah, Noam (why would you want either of those two if you have a Noah?), Jedidiah (go on, I dare you!), Elias (which I do like), Gabriel, Ishmael, Ethan and Benjamin
That enough names for you?