The ten nearest audiences to Heather Cox Richardson's are spread across politicians, journalists, authors, and professionals — with no single neighbor pulling away from the pack. Similarity here measures how closely two entities' audiences resemble each other in composition; scores across the top 10 run from 0.9472 to 0.9626, a band of less than 0.02 separating first from tenth.
Anne Lamott (0.9626) sits at the top, followed closely by The Lincoln Project (0.9607) and Amy Klobuchar (0.9603). The subcategory distribution across the ten is notably even: two authors (Anne Lamott and Michael Beschloss, 0.9546), two politicians (Amy Klobuchar and Evan McMullin, 0.9505), two journalists (Mary Louise Kelly, 0.9532, and Peter Alexander, 0.9472), and two professionals (Tom Nichols, 0.9531, and Marc E. Elias, 0.9483). Auschwitz Memorial (0.9565), a non-profit, is the one organizational outlier. Notably, no other Academics — Richardson's own subcategory — appear in the top 10. The cluster is cross-kind throughout: the audience shape she shares most closely belongs to political commentators, journalists, and authors rather than fellow academics.
The flat, tightly compressed scores suggest an audience that moves coherently across a specific civic-political media landscape rather than concentrating around any single figure or type.