Messing with collision groups seems to do something. I discovered that the ragdoll only works when rigs with the Character tag cannot collide, which is a shame because I am working on a fighting game where character collisions are pretty crucial.
If the remake of your module allows us to have character collisions - then hooray! But for now, I’ll stick to other ragdoll solutions.
You can edit the collision groups to make characters collide with each other
But then the ragdoll completely breaks and glitches, as shown in the video I provided
How do I make the limbs collide with themselves? Can I also make the ragdolls collide with each other?
Still waiting for the promised update 
Is there a way to make clothing work?
PLEASE UPDATE 
asdasdasdadsadsadadasd
there’s an issue where when another dummy or player gets ragdolled they become like this until they get unragdolled: