Something like this perhaps…
https:// www.forbes.com/sites/bruceupbin/2011/10/22/the-147-companies-that-control-everything/#cd12b2a5105b
It's a tad bit older but the representation of a circular flow among connections is there at corporate level. Asides from all the big players, the underlings are left at the corporate level, hence watching resignations or dismissals or what have you, for whatever they decide to do.