Abu Ahmad ibn 'Adi al-Jurjani: He denies hadith from trustworthy narrators and plagiarizes hadith. All his hadiths are fabrications, and some of them he stole from people. He has other fabricated hadiths besides these. He was accused of fabricating hadith. Ja'far's hadiths are either narrated from a trustworthy narrator with a sound chain but have a fabricated text, or they have a stolen text from a trustworthy narrator but an unsound chain.
Abu Hatim ibn Hibban al-Busti: He was among those who would steal hadith and alter narrations. He would narrate a sound hadith that is well-known through one chain of transmission through another chain so that no one would suspect that he fabricated it. He used to do this. He would not say 'narrated to us' in his narration; he would say 'so-and-so told us'.
Abu Zur'a al-Razi: He narrated hadiths that have no basis.
Ibn Hajar al-'Asqalani: Liar
Al-Khatib al-Baghdadi: He was a hadith scholar and he was eloquent.
Al-Daraqutni: Rejected and once: A liar who fabricates hadith, and a liar and fabricator
Muslima ibn al-Qasim al-Andalusi: Trustworthy
Niftawayh the Grammarian: One of the hadith scholars