SCHEMA_TYPE_NUTRITIONINFORMATION
Reports whether the page declares a schema.org nutrition information. Informational: pages that are not a nutrition information are not expected to declare one, so this never affects the score.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.