Abu Ahmad ibn Adi al-Jurjani: He fabricates hadith, he has no sound hadith and all or most of his hadiths are fabricated, and he is in the rank of those who fabricate hadith
Abu Bakr al-Bayhaqi: He is among those who fabricate hadith
Abu Hatim al-Razi: He narrated fabricated hadiths and was a liar
Abu Abd Allah al-Hakim al-Naysaburi: Most of his hadiths are Munkar (rejected) and fabricated
Ibrahim ibn Yaqub al-Jawzajani: An outright liar
Ibn Iraq: A liar known for fabrication
Ibn Qayyim al-Jawziyya: He plagiarized the book 'al-Aql' from Abd al-Aziz ibn Abi Rawwad, then he brought other chains of narration
al-Daraqutni: Abandoned, and a liar
al-Dhahabi: Perished