https://docs.godotengine.org/en/3.2/development/cpp/inheritance_class_tree.html
Under this document page there is a resource graphic that could use the addition of the mono module.
mono->script->resource.
GDScript already has one that shows it inherits from script, but there isn't one for mono.
Now i understand this might be a minor issue, but it may help some people in the future.
Just thought i would let you guys know about it.
PS. if there was a page explaining how the mono module works added in the future, that would also be great. thanks!
This certainly needs an update especially for Godot 4.0.
I've discovered Sourcetrail source explorer and with the compilation database support added in godotengine/godot#32848 we could write instructions on how to create a Sourcetrail project to view Godot's inheritance and other neat stuff there:

@fire may also give some ideas, as I've found this through one of his replies at Godot's Discord. 馃檪
On Windows, compilation db works.
scons platform=windows use_llvm=yes use_mingw=yes -j16 target=debug werror=no compiledb=yes",
Possible adjustments include using target=release_debug.
This uses https://github.com/mstorsjo/llvm-mingw.
ClassDB term[NOTE not latest master and customized]
Converted svg to png with affinity designer.

[NOTE not latest master and customized]
Converted svg to png with affinity designer.
Dont' use PNG for primitive diagrams, Always use SVG and the predefined Godot color palette for primitive diagrams. this process needs to be automated by script, generate UML>
apply SVG + CSS
tips:
affinity layer names are css IDs when export svg. and groups are g element in svg.
Most helpful comment
On Windows, compilation db works.
Possible adjustments include using
target=release_debug.This uses https://github.com/mstorsjo/llvm-mingw.
ClassDBtermClassDB.zip