At 0.894 and 0.888 respectively, Seth MacFarlane and Tom Hanks sit nearly level at the top of Craig Ferguson's similarity graph — two distinct poles that together define the shape of this audience.
The two-peak structure is real: MacFarlane (TV Personalities) and Hanks (Actors) are separated by less than a hundredth of a point, yet both pull noticeably ahead of the next tier. From there, the top 10 settles into a dense band of actors — Neil Patrick Harris at 0.87, Megan Mullally at 0.84, Wil Wheaton at 0.83, Sean Hayes at 0.83, and Patrick Stewart at 0.82. Seven of the ten neighbors carry the Actors subcategory. The remaining two are Penn Jillette (Comedians, 0.82) — the only neighbor sharing Ferguson's own subcategory — and Funny Or Die (Humor Memes and Satire, 0.81). No other TV Personalities appear in the top 10 beyond MacFarlane.
The pattern is a comedian whose nearest audiences are overwhelmingly shaped by actors, with the two strongest pulls coming from opposite ends of the celebrity spectrum — a TV auteur and a prestige film star — bridged by a cluster of performers associated with comedy-adjacent television.