As @KirkWM surmised there are example scripts within Dynamo to export property sets out of C3D and into a CSV file. However, it relies entirely on python coding node and dynamo 2022 comes up with a warning saying that form of python code (I believe Ironpython) relied upon in this graph may not be supported in future versions.
just about every example for civil 3d in this forum refers back to this example graph.
eg.)
I think this was a great tool, but I didn’t want to build a series of graphs based on a soon to be defunct base, or be limited to just the separate CSV output file it provided. Especially if there were better more modifiable options.
and thanks to kirkWM’s starting point I should be able to complete the graph I want.