What was the name of the Jewish leader of Khaybar during the time of the Prophet Muhammad, may Allah bless him and grant him peace?

The Jews of Khaybar had leaders during the time of the Prophet, peace and blessings be upon him, among whom was Abu Rafi', who was killed in the expedition of Abdullah ibn Atik. Also among them was Salam ibn Mishkam, their leader on the day of the Battle of Khaybar, and after his death, Abu Zaynab ibn al-Harith assumed leadership.