I'm mostly producing component diagrams where we detail communication interfaces and services responsibilities; those are stable, long running and broad enough

I'm mostly producing component diagrams where we detail communication interfaces and services responsibilities; those are stable, long running and broad enough that one they don't become immediately obsolescent and still are granular enough that they can convey useful information to whomever reads them we also do produce some reverse engineered code map with doxygen here and there, so we can cut down cross dependencies and dependency cycles as the codebase matures