A couple of things I find interesting about this – one the proliferation… they’ve really gone from 1 to hundreds very quickly, even though most of them are bootstrapped… the other is that there seems to be a European locus around the UK and Holland – makes me think of wool smuggling or the East India companies (or that era at least) for some reason.
And the other one of course is that this is a community. All of these people are talking to each other… they wouldn’t be on the map otherwise.