Hmm... I don't know. I've noticed a few different themes: computers, Greek letters, astronomy. The others sounds like they could have come from a name generator. Some I can identify, others I have no clue. But I can't say I've had any that sounded Italian to me (not that I speak any Italian whatsoever, heh.) Bistro is definitely French though.

Maybe one of them will pipe in and let us know just how they DID come up with our little peeps very interesting and amusing names.