Easy way to change creature skeletons?

[MeatBeatus]

I've been doing a survival run with Whispering Hills installed and noticed that creatures that move like ghouls don't work with AAF, so I'm assuming they use a custom skeleton. Is there an easy way to switch them to the default feral ghoul skeleton? I've barely used Fallout 4's Creation Kit (or GECK?) so I don't know how easy or complicated this would be.