Any favourite colonies?

Those are sort of mildly interesting, and I could see including them as a text box/sidebar, space permitting. But physical peculiarities as such aren’t going to contribute to the type of campaign you seem to favor. If a world doesn’t have interesting social arrangements in response to one of these peculiarities it’s no more than a curiosity.

A different but related question, for me, is what is the median value, or the modal value, on each of the implied dimensions; and following on from that, are there any world that have the modal values on all of the dimensions, and are those worlds generally similarly physically to Earth That Was, or if Earth still existed, would it be an atypical world? (I suppose that Earth might have been one of the more densely populated at the time of its destruction, but aside from that?)

Iter, and perhaps one of the ocean worlds with no more than tiny islands, might have interesting social traits in reaction to their sparse land area.