Here, “shading” covers several topics: textures, materials, and color palettes for characters. Lighting is covered separately. Non-character shading is also separate.

Colors

Skin

Here’s a typical anime skin color palette.

Specific Shaders

https://github.com/michael-gh1/Addons-And-Tools-For-Blender-miHoYo-Shaders

TODO: The Genshin Impact Shader

https://blender-addons.org/npreevee/