The top 10 neighbors for Luke Russert compress into a narrow band — scores running from 0.98 down to 0.96 — with no single neighbor pulling sharply ahead of the rest. That flat distribution is itself the finding.

Nine of the ten neighbors carry the Journalists subcategory: Chuck Todd (0.98), Kasie Hunt (0.97), Hallie Jackson (0.97), Kaitlan Collins (0.97), Richard Engel (0.97), Peter Alexander (0.97), Robert Costa (0.96), EJ Dionne (0.96), and John Harwood (0.96). The lone exception is Michael Beschloss (0.97), whose subcategory is Authors. This is a same-kind cluster in nearly pure form: the audience that follows Russert looks almost indistinguishable, in composition, from the audiences following a dense cohort of television and print political journalists. Similarity here is a cosine-style measure of audience shape — how alike two audiences are in their makeup — not a claim about thematic overlap.

What the flat shape signals is that no single journalist anchors this audience more than the others; the overlap is distributed evenly across the peer group, suggesting an audience that moves fluidly through the broader political-journalism ecosystem rather than clustering tightly around any one figure.