Human movement beyond the human form
All prerendered and simulation heavy, but mind what is possible in pre-render CGI usually becomes possible in real time after 5 -10 years.
Low tech but effective
Create a non-human character to be animated by mocap data. Either made of rigid things parented to bones (as in random access character), or deformed by a humanoid skeleton, or both.
Mixamo Mocap animation + custom skin / rig
What if your automatic rigging didn’t work because your character is not humanoid enough?
You can use a standard armature, edit it, and apply the skin in blender. It can then be imported to mixamo and you can use all the mocap animations.
You can parent meshes to bones from a Mixamo standard armature to add accessories or create a character entirely made of objects, to be animated with mocap data.