App to create PCB overview for creating manual

From your first post I didn’t understood what you exactly need.

In 2017 finding how to get such picture was my first task with KiCad (before I started designing first PCB). I decided to use for it Courtyard layers as there are no User layer pair (pair = swapping top/bottom with footprint). Because of this decision I have Ref and Value in my footprints at Courtyard layer.
Here I showed how my pictures look like:

With V4 and V5 I couldn’t get those pictured directly from KiCad so I exported to svg the copper layer and Courtyard layer (once with Values and once with References) and then mixed them using inkscape changing copper layer to gray 10%.
With V6 I don’t know, but with V7 I recently found that now I can get my pictured directly from KiCad using for it color themes.