The Kizoku persons who participated in deliberations of state affairs in Daijokan were called Giseikan (legislators) (Kugyo - court nobles), and the typical clans that produced Giseikan officers in the eighth century, when the Ritsuryo system started, included following: the Abe clan, the Otomo clan, the Fujiwara clan, the Tajihi clan, the Ki clan, the Kose clan, and the Ishikawa clan.
太政官において国政審議に参与する貴族らを議政官（公卿）というが、律令制が開始した8世紀の代表的な議政官氏族を挙げると、阿倍氏、大伴氏、藤原氏、多治比氏、紀氏、巨勢氏、石川氏らであった。