Here Sketchfab is the best accurate reference for this
I know seems like anisotropy is not default supported in MeshStandardMaterial. Or it did? 
But if it’s not I want to have an idea as a starting point about how to extend the MeshStandardMaterial to
make support the anisotropy. 
This isn’t currently supported in MeshPhysicalMaterial, but would be a nice addition someday. It looks like someone already has an implementation written that could be used (but I’m not sure of the details on how to use it)… GitHub - repalash/gltf_materials_anisotropy: Custom extension with blender addon to support anisotropy factor and anisotropic rotation/direction map in GLTF/GLB
The code in gltf_materials_anisotropy repo just has the importer for a GLTF exported with anisotropy extension from blender and the shader snippets that are compatible with three.js.
I have not shared the complete js code as it’s part of a much bigger codebase, but I have updated the Readme with the code I am using to patch the mesh physical shader, incase someone want to take a look.
Here’s a demo of it working: Anisotropy Demo
The flow is similar to filament, so you can have a look there on how it works.
Thanks so much @donmccurdy @repalash
This is insanely useful.
How to export the available anisotropy values after installing the plug-in? Can I use a small video to demonstrate the process? thank!