Currently, the spine-godot runtime does not provide a built-in component specifically for setting up ragdoll skeletons like the one available in Unity. The spine-godot runtime focuses on providing nodes and API access for displaying, animating, and manipulating Spine skeletons within Godot. However, you can potentially implement ragdoll physics by manually integrating Godot's physics system with the Spine skeleton. This would involve using Godot's physics nodes and scripts to simulate ragdoll behavior by controlling the transforms of the bones in the Spine skeleton.

I'm currently working on getting spine-godot to work as an extension. Once that is complete, I'll focus on SpineSprite3D after which I should have time to provide a ragdoll example. I'm afraid it's going to take a while and if you are pressed on time, spine-unity is your better bet in the mid term future.