categorist
A categorist is a person who engages in categorization—systematically organizing items, ideas, or data into categories, classes, or taxonomies. The practice involves identifying distinguishing features, determining criteria for inclusion, and establishing hierarchies or relations among categories. The term is not widely used as a professional title in most industries; it is more of a descriptive label for anyone who performs categorization as part of their work or study.
In information management, librarians, archivists, and information architects act as categorists when designing classification schemes, metadata
Philosophically or theoretically, categorist may appear in discussions about the role of categories in knowledge or
See also categorization, taxonomy, ontology, information architecture.