The top 10 neighbors for Last Week Tonight compress into a narrow band — similarities running from 0.99 down to 0.97 — with no single entity pulling far ahead of the rest. That flat distribution means the composition of the cluster, not any one standout, is the finding.

Comedians dominate the mix. John Oliver leads at 0.99, followed by Stephen Colbert at 0.98 — both classified as Comedians. The cluster then fans out across subcategories that share little surface resemblance to a TV show: Merriam-Webster (Websites, 0.98), Monica Lewinsky (Activists, 0.98), Neil deGrasse Tyson (Academics, 0.98), Lin-Manuel Miranda (Musicians and Bands, 0.98), and NPR (Podcasts and Radio, 0.97). Rounding out the ten are The Daily Show (TV Shows, 0.97) — the only other TV Show in the top 10 — Pod Save America (Podcasts and Radio, 0.97), and Greta Thunberg (Activists, 0.97).

The subcategory tally across the ten: two Comedians, two Activists, one Website, one Academic, one Musician, one Podcasts and Radio, one TV Show, and one more Podcasts and Radio. No single subcategory accounts for more than two slots. What unifies them is not format or field but audience composition — a cross-kind cluster spanning satire, public radio, science communication, and civic activism that all draw audiences shaped the same way.

This shape suggests Last Week Tonight's audience is defined less by loyalty to a TV format than by a consistent set of interests that cuts across media types and public figures.