Abu Ahmad ibn Adi al-Jurjani: Weak, and most of what he narrates are munkar (rejected). He has hadiths narrated from him by others besides his son Salih who is upright. He is among the weak narrators, and so is his son, and most of his hadiths are not preserved.
Abu Bakr al-Bazzar: Lenient in Hadith, and the scholars of knowledge narrated from him and transmitted hadith on his authority.
Abu Ja'far al-'Uqayli: There was severe confusion in his memory, and he used to lean towards Qadar (pre-destination). He narrated munkar (rejected) hadiths, and mentioned a hadith and said: "The narration in this text has leniency."
Abu Hatim al-Razi: Not strong, he was a righteous man.
Abu Hatim ibn Hibban al-Busti: He was among those who were overcome by excessive asceticism, so much so that he neglected the memorization of hadith. He would err when narrating and make mistakes when transmitting hadith, until he went beyond the bounds of justice.
Abu Dawud al-Sijistani: Weak
Ahmad ibn Shu'ayb al-Nasa'i: Weak
al-Daraqutni: Abandoned, and not strong.
Zakariya ibn Yahya al-Saji: Truthful, weak in Hadith
Sa'id ibn 'Amr al-Dab'i: Trustworthy, reliable
Muhammad ibn Isma'il al-Bukhari: Not like that, and once: Not strong
Yahya ibn Ma'in: Not reliable, do not write down his hadith, and once: Not reliable at all