Frequent headmate names?

There's a cliche going around that plurals often have recurrent names for their headmates. Do you agree and what are very frequent headmate names in your sense? I've seen "Luna" a lot personally.

Just to clarify, it makes sense that a lot of different systems would have similar names for their headmates, because names have meanings, so don't feel invalid just because your name is a common headmate name!

I'm also talking about "chosen" or "original" names, so I'm not really talking about names of introjects that are frequent or birth/given names, but you can add those too if you feel they are relevant