Uncredited role

Through lack of a better term (and because Category:Credits without reference already exists).

A subset of Category:Use ProductionHistory template. These are people who are being credited with working on games on "person" pages, but are not listed on the "game" page. However, the game in question doesn't have credits, so the information has come from a later source.

e.g. Keisuke Tsukahara (composer) lists American Baseball, but American Baseball does not list Keisuke Tsukahara (and has no in-game or manual credits).

This category name sucks, but if we sort out game credits, it doesn't need to exist.