Abu Ahmad ibn Adi al-Jurjani: An unknown sheikh who narrated fabricated reports from trustworthy narrators and others. He is considered weak in his narrations and hadiths.
Abu Ja'far al-'Uqayli: A rejector of hadith, his hadiths are not accepted.
Abu Hatim ibn Habban al-Basti: He was foolish, he used to narrate whatever he heard, thus he deserved to be abandoned.
Abu Nu'aym al-Asbahani: Weak
al-Daraqutni: Abandoned
al-Dhahabi: Among his blunders, he mentioned a hadith
Muhammad ibn al-Rabi' al-Jizi: He dictated from Ibn Luhayya and others things he never heard, and he never heard a hadith.
Yahya ibn Ma'in: Liar