Maren's brother needs a name

I’m needing feedback/suggestions for our son’s name. Our daughter is [name_f]Maren[/name_f] [name_f]Grace[/name_f] (last name O’M@ll3y). We want something that reflects our Scotch-Irish heritage, but doesn’t veer into leprechaun territory, which is easy to do with our last name.
Here are our favorites:

[name_u]Micah[/name_u] - (I know it’s a little matchy with [name_f]Maren[/name_f], but I [name_u]LOVE[/name_u] this name and have only known wonderful little Micahs).
[name_m]Eli[/name_m] - Maybe a little too popular.
[name_m]Callum[/name_m] - nn [name_u]Cal[/name_u].
[name_m]Cormac[/name_m] - nn [name_m]Mack[/name_m]. My guilty pleasure name, but my husband doesn’t mind it.
[name_u]Everett[/name_u]
[name_u]Elliott[/name_u]
[name_u]Evan[/name_u]
[name_m]Kellen[/name_m] - I love this, my husband doesn’t.
[name_m]Connor[/name_m] - I love the meaning, probably a little too popular.

Any suggestions? I feel a bit stuck.

My favorite is [name_m]Callum[/name_m]! I love [name_m]Callum[/name_m] and [name_m]Callum[/name_m] & [name_f]Maren[/name_f] are great together! I also really like [name_m]Cormac[/name_m], [name_u]Micah[/name_u] & [name_u]Everett[/name_u] (but not sure I love them with [name_f]Maren[/name_f]). [name_u]Elliott[/name_u] is not one of my personal favorites but it is a great match with [name_f]Maren[/name_f]. I agree [name_u]Conner[/name_u] & [name_m]Eli[/name_m] are a bit popular and my least favorites are [name_m]Kellen[/name_m], [name_u]Evan[/name_u].

[name_m]Conall[/name_m]
[name_u]Ellis[/name_u]
[name_u]Niall[/name_u]
[name_m]Teague[/name_m]
[name_m]Graeme[/name_m]
[name_m]Ronan[/name_m]

I cannot convey how much I [name_u]LOVE[/name_u] [name_m]Cormac[/name_m]/[name_m]Mack[/name_m]. Like, [name_u]LOVE[/name_u]. The runaway choice from your list, [name_f]IMO[/name_f]. I also really like pp’s suggestion of [name_m]Graeme[/name_m].

I love [name_m]Callum[/name_m] ([name_u]Cal[/name_u]) and Everrett!