People

Systems, singlets, and all in-between who influenced or created plurality works.

* they made a thing (a book, a conference, a website of significance)
* they influenced how multiplicity was viewed in the culture (not necessarily in a good way)
* they documented a thing (say, a researcher)
* they were a moderator, maintainer, or otherwise involved in the management of a group

This is not supposed to be a full directory of plurals, and it should not be invasive. Don't be a creep; use publicly available material only.