close siblings--that makes sense.
I've only been playing rpgs for a few years (2007ish), so in AW when you say "there are a million ways to GM games," I was assuming hyperbole, and that there are in fact a handful of concrete ways, but now I'm seeing maybe the truth is closer to a million?
What else I've GMed, hmm:
-A coupla single session games of Mouse Guard (play to make the characters heroes)*
-Houses of the Blooded (?! the game didn't hang together for us; I felt like it didn't tell me how to GM)
-A single session of Steal Away Jordan (strangely seems similar to MG: play to make the characters heroes)
-way back, my first playing (GMing, that is) at all: 3.5 D&D (um, play to make the characters heroes? Seems like a lot of that flying around)
*these parentheses are obviously just shorthand, trying (perhaps unwisely) to distill the "way to GM" of each game into a single priority.
And then I've played a bunch of non-GMed games, S/lay w/Me, Breaking the Ice, Dreaming Crucible, GXB, A Penny For My Thoughts, and more. Those probably aren't pertinent to the conversation, but maybe somewhere else it would be fruitful to break down how to approach them as players, because GM-like roles get distributed in different ways in each.