To me, some of the playbooks having two lists simply is one male and one female, but with gender identity in AW being what it is it's not always easy to spot the difference, and sometimes they seem written to make you think "ok, this seems like the female list, oh wait, Smith? That's not female." just to mess with you.
Then again, the brainer has one male, one female and one other.
The driver has one with normal names, and one with car names.
The gunlugger has one "normal", and one dog list.
The hocus has one with weird words (that is, "not-at-all-names" words) and one with animals.
The operator is probably the most clear-cut male/female split.
The savvyhead seems to be "names based on first names" and "names based on surnames".
There's some kind of half-baked logic to almost all of them, but they've all got their own system.