Abu Ahmad ibn 'Adi al-Jurjani: He has munkar (rejected) narrations that no one follows him on
Abu Hatim al-Razi: He was a hafiz (one who knows by heart a large number of hadiths) but unknown
Abu Hatim ibn Hibban al-Busti: A hafiz who may have erred
Ibn Hajar al-'Asqalani: Trustworthy, but he has some errors. Once, Abu Hatim considered him unknown while others knew him. He is not unknown, as four trustworthy narrators narrated from him, and al-Dhahabi considered him trustworthy. However, he only has one hadith in al-Bukhari
Al-Khatib al-Baghdadi: Trustworthy, described as having good memory
Al-Dhahabi: Saduq (Truthful)
Abd al-Samad ibn Abd al-Warith al-'Anbari: He used to affirm him and mention him with precision
Aqba ibn Mukrim al-'Ami: He was one of the companions of Shu'ba (a trustworthy narrator)
Muhammad ibn Ismail al-Bukhari: His hadith is well-known, he was a hafiz
Muhammad ibn Yahya al-Dhahabi: Trustworthy in Shu'ba, death came early to him
Authors of Tahrir Taqrib al-Tahdhib: Trustworthy. Abu Hatim's claim of him being unknown is refuted by the narration of four trustworthy narrators from him