The evolution list has slightly over 320 names. It seems to grow about 10 per month, more or less, and all applicants are actually screened to check out their posting history. The lists includes many physicists, chemistry professors, mathematicians, archaeologists, geologists, astronomers (well, one of those), engineers, and of course biologists of every variety. And we've got loads of non-science types too, but they're all science-literate.
That's also a big list. GGG is a little larger, but we're not all that discriminating Checking posting history might not be a bad idea, if I ever start a new list.