The top 10 neighbors for Kourtney Kardashian sit within a narrow similarity band — from 0.9961 down to 0.9529 — with no single neighbor pulling sharply ahead of the rest. That compressed range is the defining structural fact here.
Similarity scores measure how closely two entities' audiences resemble each other in composition. The top 10 are dominated by two subcategory types: Reality TV Stars and Musicians and Bands. Khloé Kardashian leads at 0.9961, followed by Kris Jenner at 0.9861 and Kylie Jenner at 0.9783 — all three are Reality TV Stars or TV Personalities from the same franchise orbit. Kendall Jenner (0.9719, Models) rounds out that cluster. Then the set shifts: Iggy Azalea (0.9652), Selena Gomez (0.9604), Justin Bieber (0.9598), Katy Perry (0.9563), and Demi Lovato (0.9529) are all Musicians and Bands. Kim Kardashian (0.9554) is the one additional Reality TV Star in the top 10, bringing that subcategory count to four against five Musicians and Bands.
No actors, TV channels, brands, or other subcategories appear in the top 10 — the set is entirely Celebrities and Influencers, split between the family's own reality TV subcategory and a cohort of mid-2010s pop musicians.
The flat shape here reflects an audience that is broadly shared across a specific celebrity tier rather than anchored to any single figure or kind.