Nine of Samoa Joe's ten nearest neighbors share his subcategory — Athletes — and the scores compress into a band of just 0.005 wide, from Cesaro at 0.99 down to Miro at 0.98. That compression is the defining feature of a flat shape: no single neighbor pulls ahead, and the audience profile is essentially uniform across the cluster.
The nine athletes — Cesaro (0.99), AJ Styles (0.99), Daniel Bryan (0.99), Drew McIntyre (0.99), Leah Van Dale (0.99), Nic Nemeth (0.99), Jeff Hardy (0.98), Kurt Angle (0.98), and CJ "Lana" Perry (0.98) — are all classified as Athletes, making this a near-pure same-kind cluster. The lone exception is Miro, classified under Technology, who sits at the bottom of the ten at 0.98 — still within the tight band rather than as a true outlier. The cluster spans performers from multiple eras and promotions, which suggests the audience shape here is defined by the wrestling-fan profile broadly, not by any single promotion or era.
The flat, same-kind structure indicates an audience with a sharply defined interest set that maps consistently onto professional wrestling athletes as a category.