Two neighbors sit at the top of Sal Vulcano's similarity graph so close together they're nearly indistinguishable: Joe Gatto at 0.99 and James Murray at 0.99 — the two-peak structure the shape flag names. These aren't just the nearest neighbors; they define two poles of the same tight cluster, with Impractical Jokers (0.98) and Brian Quinn (0.98) filling in the rest of the core group. The top four neighbors are, in effect, Vulcano's own cast — the show, the co-stars — and their audience shapes are nearly identical to his.
The drop to the next tier is real but not dramatic. Bert Kreischer (0.88) and Kevin James (0.88) represent the first neighbors outside that inner circle: a comedian and an actor whose audiences rhyme with the Jokers crowd. Below them, the neighbor set broadens into a mix of TV shows (MLB The Show at 0.86, Daniel Tosh at 0.86, Adam Sandler at 0.86), a video game franchise, and Major League Baseball (0.85) — a baseball thread that runs through several top-10 entries. The subcategory tally across the top 10 spans Comedians, TV Personalities, TV Shows, Actors, and a Video Game Franchise, but the gravitational center is unmistakably the Impractical Jokers ensemble.
The two-peak shape here reflects a cast that travels together in audience space: Vulcano's audience is shaped first by his co-stars, then by a broader comedy-and-baseball-adjacent crowd.