The top 10 neighbors span six distinct subcategories — no single kind dominates — which is the defining feature of Chuck Grassley's audience shape.
The shape is broad: similarity scores run from 0.84 down to 0.72 with no sharp drop-off, and the neighbor set mixes Politicians, Health and Medical Services providers, a Fitness Center, a Professionals entry, a Website, and a Mid-range Hotel. Scott Walker leads at 0.84, followed by Kristi Noem (0.78) and Governor Kristi Noem (0.78) — the two Noem handles effectively representing the same audience cluster. Josh Hawley (0.77) and Robert J. O'Neill (0.76) round out the top five. Four of those five are Politicians (Grassley's own subcategory), but the set quickly diversifies: Anytime Fitness (0.75) is a Fitness Center, Health & Medical Services (0.73) and Miracle-Ear (0.73) are both Health and Medical Services providers, The Federalist (0.72) is a Website, and AmericInn (0.72) is a Mid-range Hotel. The presence of two health-services entities and a gym alongside the political neighbors — all scoring above 0.72 — is the structural signal that distinguishes this audience from a purely political cluster.
The broad shape, with health and fitness brands holding positions 6 through 8, suggests an audience whose composition extends meaningfully beyond political media consumption.