The standardised assignee type is listed into these categories.
Company - Assignees that are registered companies. (PFIZER)
Person - Assignees which are a person that submitted it as themselves. (STEVE JOBS)
Academy - Assignees that are under an education group. (UNIVERSITY OF LIVERPOOL)
Government - Assignees that are Government related (US DEPT OF HEALTH)
Other - Assignees that do not fit in any of the criteria above or they have multiple assignees such as a University with multiple people who are listed as the Assignee. Example below: