Well from what I see the only name you both agree on is
Damian, but with different spellings. I personally prefer
Damian, but it's not my kid, so if I had to choose from the options, it would be
Damion.
Damien looks off to me. I think
Christopher is better in a middle name spot rather than a first name. I would probably put the other J names in a middle name spot too. Perhaps you just have to wait until you meet him and he will reveal his name?
Suggestions (mostly old I'm sure):
Remiel /
RemyNathanielRiverTobias /
TobyOrionXavierGideonAsaReubenGraysonRexOziasCadeJeremy /
RemyRyden