The top 10 neighbors for Wait Wait Don't Tell Me span journalists, fellow public-radio programs, a TV personality, a website, and a comedian — a mixed cluster with no single subcategory dominating and no score standing far above the rest.
Similarity here measures how closely two entities' audiences resemble each other in composition. The scores across the top 10 run from 0.98 down to 0.97, a band of roughly one percentage point — the defining feature of a flat shape. Peter Sagal leads at 0.98, followed immediately by Morning Edition at 0.98 and Steve Inskeep at 0.98. Ari Shapiro (0.98) and All Things Considered (0.98) continue the run, with Nina Totenberg (0.98) and The Onion (0.98) close behind. Bradley Whitford (0.97), Pete Buttigieg (0.97), and Audie Cornish (0.97) round out the ten.
By subcategory, four of the ten are Journalists (Inskeep, Shapiro, Totenberg, Cornish), two are Podcasts and Radio (Morning Edition, All Things Considered), one is a TV Personality (Sagal), one is a Website (The Onion), one is an Actor (Whitford), and one is a Politician (Buttigieg). The center entity is itself a Podcast and Radio property, so two neighbors share its exact subcategory — the audience is not purely self-similar; it extends equally into the orbit of NPR journalists and, notably, a satirical website and a politician.
The flat shape and the tight score band together indicate an audience that is broadly shared across a coherent but multi-subcategory ecosystem rather than anchored to any single neighbor or kind.