Jeff Sutherland is the co-creator of Scrum and one of the original signatories of the Agile Manifesto. His significance to the Richards KB lies in a direct citation: Sutherland has explicitly acknowledged john-boyd and the ooda-based-competition loop as an influence on the design of Scrum. This makes Sutherland a key node in the boyd-agile-bridge that Richards documents and extends.
Where Richards approaches the Boyd-Agile connection from the Boyd side — asking how Boyd's military strategy maps onto software development — Sutherland represents the Agile side of the same bridge, confirming that the connection was intentional, not merely retrospective.
Richards has presented at agile-alliance conferences making the case for agile-as-maneuver-warfare, and Sutherland's prior acknowledgment of Boyd strengthens that argument. The boyd-and-beyond-conference community and the Agile community overlap in part through figures like Sutherland.
Sutherland's work on Scrum also connects to the organizational-climate-for-business framework Richards develops: the autonomy and rapid iteration of Scrum teams reflects the einheit-as-trust and fingerspitzengefuehl-as-expertise concepts Richards draws from Boyd's German military influences.