This builds on another video but also shows the process of parenting other meshes to the Cloth with cloth physics via Vertex Groups.
-Add Cloth Physics
-Export mdd file
-Import mdd file & delete the cloth physics
-Parent multiple meshes to a Vertex Group at the the the top of the Cloth Physics Mesh
-Bake Animation for Parented Meshes
-Export gltf files for the Parented meshes & Cloth Physics*
*I had to do separately - the animations not working for all meshes when I try to export together. Comment below if you catch the bug/error.