Abu Ahmad ibn Adi al-Jurjani: His hadiths are not preserved
Abu Bakr al-Bazzar: Thiqah (trustworthy)
Abu Hatim al-Razi: Salih (righteous) but not strong
Abu Hatim ibn Hibban al-Busti: He narrates fabricated reports from trustworthy narrators, reverses chains of narration, and elevates statements of the Prophet's companions to the level of Hadith. It is not permissible to narrate from him or write down his Hadith except for examination purposes
Abu Dawud al-Sijistani: He is not bad
Ahmad ibn Salih al-Jili: Thiqah (trustworthy)
Yahya ibn Ma'in: Suwaylih (weak)