Interesting, do you have any examples of the out-there names?
Elijah, Mason, Logan, Harper, Jackson, Ethan, Avery, Madison, Carter, Wyatt, Jayden...
These are just a few from the top ~20 boys and girls names. I've heard all of these in a US media context but never heard any of them in the UK. That's not to say they aren't used here, but they certainly aren't common. And of course there's "Randy".