Simply put, I'm using two color ramps to add a texture X distance from the cartoon shadow and trying to subtract from the more horizontal parts of the shadow using True Normals as FAC, the result is fairly messy and I figure compositing might be a bit more controlled. This is in an attempt to mirror an art style, I need to be able to not use this noise texture at specific angles of the shadow and I really don't know how I'd be able to obtain this factor outside of normals, which have not worked particularly great so far.
Example:
Red = Texture, Black = Shadow - using 2.8 EEVEE
New Example: Trying to get sharper, more accurate results, rather than a blurry mess at some angles.