Baker – you might want to add these info sources for diggers to the perma-list:
LittleSis (free database of who-knows-who at the heights of business and government) – "We're a grassroots watchdog network connecting the dots between the world's most powerful people and organizations"
https://littlesis.org
DiscoverTheNetworks – An Online Database of the Left and its Agendas (a project of the Horowitz Freedom Center)
https://www.discoverthenetworks.org