At 0.8971 and 0.8915 respectively, Jordan B Peterson and David Goggins form one clear peak in Jocko Willink's top 10 — but the second peak is almost entirely golf. Similarity here measures how closely two entities' audiences resemble each other in composition, not how similar the entities themselves are.
The shape is two-peak: a self-improvement and intellectual cluster anchored by Peterson (an Academic) and Goggins (a fellow Professional), and a golf cluster anchored by Paige Spiranac (0.8784), Phil Mickelson (0.8460), Jordan Spieth (0.8296), and Max Homa (0.8283) — four Athletes, all golfers by subcategory. Between those two neighborhoods sit Dudes Posting Their Ws (Humor Memes and Satire, 0.8386), the golf podcast Fore Play (0.8298), the golf media site Skratch (0.8236), and Dave Portnoy (Professionals, 0.8164) — a connective tissue of sports-adjacent media and personality content that bridges the two peaks. No other Academics appear in the top 10 beyond Peterson, and Athletes account for four of the ten slots, all concentrated in a single sport.
The overall picture is an audience that sits at the intersection of disciplined self-improvement content and avid golf fandom — two distinct communities that, in this case, share enough compositional overlap to occupy the same neighbor set.