Precedence and Reference

There is no real precedence to JSON Schema. JSON in itself is defined by RFC 4627, and JSON Schema is the first real attempt to add validation of JSON values, as well as interpretation.

There is a similar project for CBOR (RFC 7049 Concise Binary Object Representation) in attempts to define a schema standard for that notation: https://datatracker.ietf.org/doc/draft-greevenbosch-appsawg-cbor-cddl/