Abu Bakr al-Bayhaqi: Denier of hadith
Abu Hatim ibn Hibban al-Busti: A sheikh who narrates munkar (rejected) hadiths from trustworthy narrators, and unknown things from weak narrators, and fabricates names of narrators. It is not permissible to rely on him in any way, as he used to make mistakes
Abu Sa'id ibn Amr al-Naqash: He narrated fabricated hadiths
Abu Abd Allah al-Hakim al-Naysaburi: He narrated fabricated hadiths from people who did not narrate any of them
Abu Nu'aym al-Asbahani: He is dropped from hadith narration. He narrated munkar (rejected) hadiths from Abd al-Rahman ibn Yahya ibn Sa'id al-Ansari, from his father. I do not know of any other narrator from him
Al-Khatib al-Baghdadi: Weak
Al-Daraqutni: Denier of hadith, and once: He was weak and prone to mistakes
Amr ibn Ali al-Fallas: Weak and prone to mistakes