Organization owners have full access and can change several settings,
including the names of repositories that belong to the Organization and Owners
team membership. In addition, organization owners can delete the organization
and all of its repositories.

A billing manager is a user who manages the billing settings for the Organization, such as updating payment information.

A direct member is a user that is a member of the Organization.

An outside collaborator is a person who isn't explicitly a member of the
Organization, but who has Read, Write, or Admin permissions to one or more
repositories in the organization.

A suspended member.

An unaffiliated collaborator is a person who is not a member of the
Organization and does not have access to any repositories in the Organization.