Alan Alda's top 10 nearest neighbors span comedians, politicians, journalists, a non-profit, and a humor account — with no single subcategory dominating and scores compressed into a narrow band from 0.90 to 0.94. That tight spread, with no standout anchor, defines the flat shape here.

The nearest neighbor is Auschwitz Memorial at 0.94, a Non-Profit — the only organization in the top 10 and the most structurally unexpected entry in the set. Behind it sit Lewis Black (0.93) and Jerry Seinfeld (0.92), both Comedians, followed by The Hoarse Whisperer (0.91), a Humor Memes and Satire account. David Letterman (0.91, TV Personalities) and Justin Amash (0.91, Politicians) round out the upper tier. Tallying the full top 10: three Comedians (Lewis Black, Seinfeld, John Cleese), two Politicians (Amash, Amy Klobuchar), one TV Personality (Letterman), one Non-Profit (Auschwitz Memorial), one Humor/Satire account (The Hoarse Whisperer), one Musicians and Bands entry (Bruce Springsteen), and one fellow Actor (Jason Alexander at 0.91). Alda's own subcategory — Actors — appears just once in the top 10, making this a predominantly cross-kind cluster. The mix of comedians, political figures, and civic-minded accounts is the defining character of the set, not any single neighbor.

The flat, cross-kind shape suggests an audience organized less around entertainment genre than around a particular civic and cultural sensibility that cuts across comedy, politics, and public memory.