The Matryoshka hierarchy uses a word-boundary prefix hierarchy to roll child brand mentions into parent brands, with manual overrides for apex and downline rules.

flowchart TD
  Child1[Sub-Brand: Nike Air] -->|Prefix match| Parent[Parent Brand: Nike]
  Child2[Sub-Brand: Nike Running] -->|Prefix match| Parent
  Override[Manual Override: Jordan] -->|Apex rule| Parent