It is hard to beat the lists present at: https://quantumcomputingreport.com (closed source unfortunately, no GitHub) in particular:
* https://quantumcomputingreport.com/scorecards/qubit-count/ lists what are the latest qubit counts and technologies that each player is using
* https://quantumcomputingreport.com/players/public-companies/ summarizes what each player has been doing in a few paragraphs

Also of interest: https://quantumzeitgeist.com/interactive-map-of-quantum-computing-companies-from-around-the-globe/


Quantum computing player