Not sure, I have used for non-continuous use the NDepend extension for visual studio to grasp a C++ code base in the past and then exported manually to inkscape

Not sure, I have used for non-continuous use the NDepend extension for visual studio to grasp a C++ code base in the past and then exported manually to inkscape to manually rearrange things in a readable way to come up with a single page codebase cheatsheet for easing the onboarding of new devs to a specific code base at work. This is a legacy codebase that isn't expected to change significantly.