The Mibu family which held the inherited administrative position of kanmu and the Oshikoji/Oshinokoji family (the Nakahara family) which held the inherited position of kyokumu (Chief Senior Secretary of the Council of State) were collectively known as ryokyoku, and had the status of Jige.
また、官務を世襲した壬生家は、局務（大外記上首）を世襲した押小路家（中原氏）と並んで両局と称され、地下家の筆頭格とされた。