You could equally accurately say:

Distinguished mining engineers, business leaders with links to Australian mining, retired geologists, two signatories from CATO and Richard Lindzen signed the Clintel petition. Clintel was founded by a Dutch engineer with time in the oil industry, and former professor of acoustics, geophysics and innovation management.

As you mention, knowing "who" matters.

https://www.independent.co.uk/environment/climate-change-sci...