The top 10 neighbors for David Muir span a narrow similarity band — from 0.88 down to 0.85 — with no single dominant pull and no sharp drop-off between positions. That compressed range is the defining structural feature here.
Similarity scores measure how closely two entities' audiences resemble each other in composition. Within the top 10, the mix is almost entirely journalists, news programs, and news publishers. Diane Sawyer leads at 0.88, followed immediately by 60 Minutes at 0.88 and NBC News at 0.88 — three neighbors within a hundredth of a point of each other. Ann Curry (0.86) and George Stephanopoulos (0.85) continue the journalist cluster. The subcategory tally across the top 10 breaks down as: four Journalists (Diane Sawyer, Ann Curry, George Stephanopoulos, and NBC News as a News Publisher), three TV Shows (60 Minutes, This Week, NBC Nightly News), one News Publisher (NBC News), one Actor (Bette Midler at 0.86), and one TV Channel (MSNBC at 0.85). The overwhelming majority are journalists or news-adjacent TV properties — the same subcategory as David Muir himself. Bette Midler is the lone non-news figure in the top 10, and MSNBC the lone TV Channel, both sitting at the lower end of the band.
The flat shape here reflects an audience that is tightly defined around broadcast news and political journalism, with no outlier pulling in a meaningfully different direction.