Depends how literally you mean programming and processing. For example UML is a programming diagram. If you don't have the definitions anywhere else and always

Depends how literally you mean programming and processing. For example UML is a programming diagram. If you don't have the definitions anywhere else and always merge the diagram with specific methods implementation when compiling, is that an good example? What about ERD? If you materialise that into schema, is that programming? I think you'll run only into those two categories - boxes represent literal code you join together, or boxes represent something declarative that gets compiled into code but not necessarily in a straightforward way. I guess visual reporting like in MS Access could be thought of as a separate category? Depending on whether prose is programming, there's also https://visar.app/ https://visar.app/ And then there's CUBE https://marc.najork.org/papers/vl1992.pdf https://marc.najork.org/papers/vl1992.pdf