core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

affiliation

Canonical URL: http://schema.org/affiliation

Thing > Property > memberOf > affiliation

An organization that this person is affiliated with. For example, a school/university, a club, or a team.

Usage: Between 10,000 and 50,000 domains
Values expected to be one of these types
Organization
Used on these types
Person
Super-properties
memberOf

Schema Version 3.3