It looks like you have different problems here: 1. Credible sources. 2. Tools and methods for searching and matching. In my opinion: 1. It's very subjective.

It looks like you have different problems here: 1. Credible sources. 2. Tools and methods for searching and matching. In my opinion: 1. It's very subjective. Pepople just believe in different things. It's hard and time consuming. There is no the single point of truth. 2. For this purpose I wrote https://github.com/livelace/gosquito https://github.com/livelace/gosquito and I extract different keywords (tech, people, orgs etc.) from information flows. It frees my time heavily.