I’ve always had trouble coming up with good names, and in this regard names for colony worlds aren’t any different from names for people. Over the past few years I’ve built a list with about 700-ish names for colonies. However, these were intended for a Terro-centric culture, and many make little sense in Contact Light.
There was no Washington on Enderra, for example. That’s straight forward. But you’ll notice I have already been using names from Earth mythology, for example.
I think these are fair game; they resonate with us because we’re so used to them. Everybody connects Arthur to Avalon, for example. We can assume that these are translations, or an artifact of the strange way the multiverse works.
That said, I may revisit some of the names later, when I’ve got more of Colonial Space nailed down, so to speak.