Render outputs are useful when you wish to compose layers in an external application such as Photoshop. The render outputs required to produce the same image as the Final Colour output are:
Diffuse Shading (Total) + Transparent Shading + Reflection Shading + Specular Shading + Subsurface Shading + Luminous Shading = Final Color
Each layer is Added (Linear Dodge) to the previous layer in the composition. Each Layer is rendered with a gamma of 1.