Oddly enough, I find the DMG advice so specific to the type of gaming that sits in the general category of "D&D-type play" that I find it of pretty minor value in any other game at all.
Think of how much value the DMG brings to doing collab worldbuilding using "A Spark in Fate Core", as the prelude to a Fate Pathfinder game. Or even how much it brings to the Fate Pathfinder game.
When it comes to NPCs and stories, I find the NPC and Fronts guidance for Apocalypse World and Dungeon World to go much, much farther, and be much more generalizable. At least if you like sandbox D&D, versus railroad D&D.
Think of how much value the DMG brings to doing collab worldbuilding using "A Spark in Fate Core", as the prelude to a Fate Pathfinder game. Or even how much it brings to the Fate Pathfinder game.
When it comes to NPCs and stories, I find the NPC and Fronts guidance for Apocalypse World and Dungeon World to go much, much farther, and be much more generalizable. At least if you like sandbox D&D, versus railroad D&D.