Abu Hatim al-Razi: He was a Companion
Abu Nasr ibn Makula: Companion of the Messenger of Allah, peace and blessings be upon him, his name is disputed
al-Mizzi: He was a Companion
Muhammad ibn Ismail al-Bukhari: He emigrated to the Prophet, peace and blessings be upon him
Muslim ibn al-Hajjaj al-Naysaburi: Companion