What is the ideal glb model setup for useage w/ skinnedMesh

[Braedencraig]

https://codesandbox.io/s/gltf-animations-pecl6

This example above, we know it, we love it! Works perfectly, and what a treat it is! I am currently trying to implement something similar, but with a different .glb model. However, anytime I put the models I am attempting to work with into blender, they have multiple uv maps, for multiple different meshes, and its just a whole mess.

But I digress, does someone, anyone, with more than a crumb of blender knowledge have any sort of insight to share on this? Like, what kind of specs I should require of a model so that I can replicate this example above with a different model? I'm thinking, in my stunted blender terms, I need, one mesh, and one uv map, but that seems not descriptive enough....?! Any help would be greatly appreciated!