This site takes information found on Academic Librarian Status WordPress site and presents it as a sortable, searchable table. The data originated in a Wikispaces page which was shut down in 2018. The WordPress site does not appear to have been updated since.
Academic librarians hold all sorts of different professional status in different institutions. Information about librarian status is not easy to discover. During promotion process librarian's generally have to find others of the same status to review their packets.