Finding 'Graph' graph tutorials and material

I am looking for information on graph usage as a gameplay element in UE. I mean Graph graph, as in math (see example image), and not the AnimGraph and others that the first 5 google search result pages show - rightfully so.

I would like to define nodes and edges, add and remove members from the graph as in a network - all in blueprints.
Any help is appreciated.

As far as i know there is no builtin ‘Graph’ graph.

UFSM State-Machine plugin is similar to you finding. I did not use it.

UFSM State-Machine