Brother name for Amélie and Charlotte

I just recently found out I am expecting a second (yep, you read that right) set of twins (a boy and a girl) and am seeking some boy name advice for a little brother for [name]Charlotte[/name] and [name]Amelie[/name] ( french prononciation).

My partner and I are both French, so we wanted to honor our heritage. Our twin daughters are named Amélie and [name]Charlotte[/name]. His name is [name]Thierry[/name] which I was thinking of using as the first name for our child, but I am also open to other suggestions:

Here are some of my thoughts:

[name]Thierry[/name] (maybe [name]Thierry[/name] [name]Luc[/name]?)

You have charming French names here. I am fan of using family names only in the middle or in a different form so I would leave [name]Thierry[/name] out of the first name spot, particularly for twins as they may seem like favoritism.
Best from your list in no particular order:

[name]Axel[/name] (Not actually a French name, but popular in [name]France[/name])

I love [name]Thierry[/name], [name]Sebastian[/name], and [name]Tristan[/name]. [name]Thierry[/name] [name]Luc[/name] sounds great.

i love sebastian & etienne along with your girl names. what are you thinking for your girl?

[name]Pascal[/name] and [name]Felix[/name] were my first thoughts when I saw your girls’ names. I also like

(Sorry, I know there should be accents in there, but I’m clueless with them.)