I need help thinking of a boy name!

I cannot for the life of me think of a boys name that we both like. I LOVE unique names, they can’t be too common. And my Fiancé HATES last names (which is funny because my last name is 10 letters long and his is 4 lol)

Our son is named Niklaus (Ni-Klaus, like Blouse but with a K) and we normally just call him Klaus.

I am having no luck with names 😣 my fiancé likes the name Kai, but I’m not a huge Fan of kids names starting with the same letter, which I know technically Niklaus and Kai don’t, but we just call our son Klaus.

So I need help ladies! I need unique, rare, not too long, doesn’t start with a N or a K names!

My last name is Smitherman, and fiancés last name will be Zylus, but baby will be having my last name until my fiancé and I get married!