A bit hazy. Yoda, definitely. Tyvokka, a Wookiee. Oppo Rancisis. Possibly: Tor Difusal (on it during Dooku's childhood) Thame Cerulian (Dooku's master, apparently not nearly as close to him as Yoda) Possibly Yaddle. She left the Council between TPM and AotC, but it's unclear when she got on it. Not sure we have anybody else.