Thom Rainer's top 10 nearest neighbors are a tight cluster of evangelical Christian voices — spiritual leaders, fellow authors, and faith-oriented media — with scores compressed between 0.93 and 0.96, the hallmark of a flat shape.

Six of the ten neighbors carry the Spiritual Leaders subcategory: Beth Moore (0.96), Louie Giglio (0.95), David Platt (0.95), Desiring God (0.95), John Piper (0.94), and Lysa TerKeurst (0.94). Two neighbors share Rainer's own Authors subcategory: Ed Stetzer (0.95) and Matt Chandler (0.93) — though Chandler is classified as a Spiritual Leader, not an Author. Correcting that tally: Ed Stetzer (0.95) is the one other Author in the top 10. The remaining positions go to Todd Adkins (0.94), a Professional, and Christianity Today (0.93), a Magazine — both firmly within the same evangelical media ecosystem. No sports, entertainment, or general-interest entities appear in the top 10; the cluster is essentially a single-community shape.

The narrow score range and uniform subcategory composition indicate an audience defined almost entirely by one community, with little structural bleed into adjacent interest areas.