There are data brokers but they hardly compare, e.g. North Data. And the amount of information that these make publicly available is astonishing. For an exampl

There are data brokers but they hardly compare, e.g. North Data. And the amount of information that these make publicly available is astonishing. For an example, here's Bosch in Germany. Scroll down to "Netzwerk" and you see a relationship graph down to the individual level showing subsidiaries, managing directors and such: https://www.northdata.de/Robert+Bosch+GmbH,+Gerlingen/Amtsgericht+Stuttgart+HRB+14000 https://www.northdata.de/Robert+Bosch+GmbH,+Gerlingen/Amtsge... If that list seems incomplete, the page also links to all known direct subsidiaries and indirect subsidiaries. This is in addition to available financial and historical data.