Favorite uncommon boy names?

I don't want anything crazy and out there, but I also don't want my child to have 5 other kids in his class with the same name.

Ever since my husband and I started dating in high school, he has been dead set on naming his first son Leon. I didn't like it at all at first, then a couple years ago it grew on me and thought we could name our future son Leon, but now I'm back to not liking it all that much. I mean, it's okay, but I don't love it.

I love the names Callum and Rhett, but my husband said no. I'm trying to find a name that he will love just as much, if not more, than Leon. It won't be easy though. He's pretty set on having a Leon.