An NVR3R fix I ported back to vanilla. Changes to the Followers Guards records so that they actually use their LeveledCharacter list and fixes a bug with the textures.
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Basically, in vanilla there's a LeveledCharacter list (VarFollowersGuard) with a lot of face/gender and even human/ghoul variation for the guards.
This is used as a template for VFSFollowersGuard . While VFSFollowersGuard should be placed in the world directly, it is instead used as a template for the NPCs placed in the world for some reason. Even worse, all of these NPCs don't "Use Traits" from the Leveled Character list, causing face/body texture issues ("whiteface" bug) as well as throwing away all the work in to the NPC variation that was in that list. They also use the "Can be all races" flag, which is only meant for Dad from FO3 or something.
It seems that YUP tries to fix this by removing the Use Model/Animation flag. Unfortunately, this isn't a complete fix and issues are still there due to template inheritance inconsistencies.
This mod changes the records so that the traits are passed down correctly. The intended variance now shows up, and there are no more face/body mismatches.
For more background, read this. Ignore the stuff about beards, it's specific to NVR3R. Courtesy of VariableEagle