Five craft breweries and three Costco properties share Firestone Walker's top 10 — a split that defines the two-peak structure of this audience.
Similarity here measures how closely two entities' audiences resemble each other in composition. The brewery cluster is tight and high-scoring: Ballast Point Beer leads at 0.91, followed by Green Flash Brewing at 0.89 and Stone Brewing at 0.87. Sierra Nevada Beer (0.80) and Deschutes Brewery (0.79) extend the same cluster. These five neighbors share Firestone Walker's subcategory — all are breweries — and their scores form a coherent band well above the rest of the top 10.
The second peak is structurally distinct. MacRumors.com (0.80) and NASA JPL (0.80) — a tech news website and a research organization — sit just below the brewery trio, followed by three Costco-branded properties: Costco Gasoline (0.80), Costco (0.79), and Costco Optical (0.78). None of these share Firestone Walker's subcategory; they represent a cross-kind audience neighborhood spanning websites, research organizations, gas stations, big-box retail, and eyewear. The Costco cluster's presence across three distinct subcategories suggests a single underlying audience segment rather than three independent overlaps.
The two-peak shape means Firestone Walker's audience is not simply "craft beer fans" — it bridges a well-defined craft brewery community and a tech-and-value-retail audience that has no obvious thematic connection to beer.