Kalel first entered the US Top 1000 in 2013. It's possible that some parents see it as a spelling variant of the classic Arabic name Khalil, meaning friend.
Or maybe some - Nicolas Cage, we're looking at you - were inspired by the birth name of Clark Kent, a.k.a. Superman, El">Kal-El. Cage was long associated with attempts to remake a big screen story about the Man of Steel. He and wife Alice Kim gave the name to their son in 2005.
According to an episode of Smallville, El">Kal-El means star child.