IDK if it's quite the use case you're looking for, but at my company, we turn our CI YAML for our monorepo into Dot (Graphviz), and graph it, to visualize the dependencies between steps in our CI, & to highlight the critical path.

It's an ~100 node DAG. Graphviz struggles a bit with it, particularly with edge layout.

(Though really, the layout I want for it is a Gnatt chart style layout.)