How do i use Spherical Maps or Toons ?

In my native engine ( MMD ) we have a texture type Called .spa Which are simply .png maps renamed but the interesting feature about these textures are that they are basically a Cube map , but in Sphere form i want to know how to implement these textures in to my Material

SPA texture :

34052-s1+-+copy.png

34056-model_000.png

Toons on the other hand are werid they tell the Material how to handle the shadow and how it looks
they are usually a gradiant from Top ( White ) to Bottom ( Color Specified ) how do i implement these here’s an Example of Toons :

Right : w/ Toons , Left : w/o Toons

Toon Texture Example :

34055-skin.png

So in Conclusion how do i Implement these Textures?

i Figured out how to use the SPA files

Without SPA files :


With SPA files :


Here is my node setup :