Wardley Maps are diagrams that map the maturity of different parts in a value chain. They are basically a dependency chart with defined X-Y coordinates (which differentiates them from other graphs which can freely arrange the nodes)

https://en.wikipedia.org/wiki/Wardley_map

https://duckduckgo.com/?t=ffab&q=wardley+map&iax=images&ia=images

Proposed syntax: node definitions take (x,y) coordinates on a scale of 0-100

wardley
  Customer(30, 100) --> Print(60, 80)
  Print --> Website(70, 70)
  Customer --> Website
  Website --> CRM(60, 75)
  Website --> Platform(50,50)

There are also more advanced features, like arrows showing direction of trends, that could use roughly the same syntax.

  Website -.- (90, 100)

There would also need to be a syntax for labelling the axes, which could be similar to the subgraph syntax.