The top 10 neighbors for U.S. Open (USGA) span a narrow similarity band — from 0.98 down to 0.95 — with no single dominant match and no sharp drop-off, a pattern consistent with the flat shape classification.

The mix across those 10 positions is almost entirely golf-specific, but the subcategory composition is varied. The Open leads at 0.98, the only other Sporting Event in the top 10. Three Marketing Channels follow closely: Golf Digest (Magazine, 0.97), Golf Channel (TV Channel, 0.97), and ESPN Golf (TV Channel, 0.96). One TV Personality, David Feherty, sits at 0.97 — the sole non-athlete individual in the group. The remaining five positions are all Athletes: Rory McIlroy (0.96), Jason Day (0.96), Sergio Garcia (0.96), Jason Dufner (0.96), and Ian Poulter (0.96). No golf equipment brands, websites, or Sports Leagues appear in the top 10, though all of those subcategories are present in the broader neighbor set visible in the graph.

The overall picture is an audience shaped almost entirely by golf media consumption and professional golfer followings, with no single neighbor pulling the shape in a distinct direction.