At 0.90, Jim Irsay pulls harder on IndyCar on NBC's audience shape than any other neighbor — and he's an NFL team owner, not a racing figure. That cross-sport signal sets the tone for the entire top 10.
The shape is two-peak. The first cluster anchors around Indianapolis-area football: Jim Irsay (0.90), the Indianapolis Colts (0.88), Tony Dungy (0.87), and Pat McAfee (0.87) are all athletes or sports teams with deep Colts ties. Urban Meyer (0.84) extends that cluster into football coaching. The second peak is sports-talk media: Keyshawn, JWill & Zubin (0.84), Mike Golic (0.83), and The Will Cain Show (0.83) are all podcasts and radio properties oriented around NFL commentary. The BOB & TOM Show (0.82), a general-market radio program, bridges toward a broader Midwest audience, and Ohio State Football (0.82) closes the top 10 as a third sports-team signal.
Notably, IndyCar on NBC is classified as a TV Show, yet no other TV Show appears in the top 10 — the set is dominated by athletes (four neighbors), sports teams (two), and podcasts/radio (three). The motorsport-specific audience is largely absent at this tier; the shape here belongs to Midwest football fandom and the sports-talk ecosystem that surrounds it.
This two-peak structure — NFL-adjacent personalities on one side, sports-talk radio on the other — suggests the audience for IndyCar on NBC overlaps heavily with a broad American sports viewer rather than a narrowly defined racing enthusiast.