Six comedians, two public-radio programs, a journalist, and a TV personality — that is the composition of Mike Birbiglia's ten nearest neighbors, and the scores compress into a narrow band from 0.98 down to 0.97. Similarity here measures how closely two entities' audiences resemble each other in composition; a score near 1.0 indicates near-identical audience shape.

The shape is flat: John Mulaney leads at 0.98, but John Hodgman (0.97), Billy Eichner (0.97), Rob Delaney (0.97), Marc Maron (0.97), and Michael Ian Black (0.97) follow within a gap of less than two hundredths of a point. No single neighbor dominates; the audience shape is broadly shared across a specific comedian cohort. The four non-comedian neighbors reinforce the cluster's character rather than pulling away from it: Serial (0.97) and This American Life (0.97) are public-radio and podcast properties; Ira Glass (0.97) is a journalist most associated with that same broadcast world; and Samantha Bee (0.97) is a TV personality whose audience evidently overlaps with this same group.

The overall picture is a tightly defined audience neighborhood — one that sits at the intersection of literary stand-up comedy and public-radio sensibility, with no outliers pulling the shape in a different direction.