Abu Ahmad ibn Adi al-Jurjani: I hope that his Hadith is upright.
Abu Ja'far al-'Uqayli: He narrated Hadiths with errors, none of which are followed.
Abu Hatim al-Razi: He was the last of the trustworthy companions of Ibrahim. There is no problem with his Hadith, but it is not evidence. He was a pious old man.
Abu Hatim ibn Hibban al-Busti: He was among those who made mistakes, but his mistakes were not so bad that he deserved to be abandoned. However, he did not reach the level of the masters, so he should not be treated as such. Rather, one should avoid his unique narrations and those that contradict the established ones. If someone argues using his narrations, I see no problem with it, as long as it agrees with the established ones.
Ahmad ibn Hanbal: He narrated few Hadiths, trustworthy.
Ahmad ibn Shu'ayb al-Nasa'i: There is no problem with him.
Ibn Hajar al-'Asqalani: No problem with him.
al-Daraqutni: Trustworthy.
Sufyan ibn 'Uyaynah: He was not a Hadith memorizer.
Muhammad ibn Isma'il al-Bukhari: He included him in the book of the weak narrators. Abu Hatim al-Razi said: He moves around among the weak narrators.
Yahya ibn Sa'id al-Qattan: He was average, not that knowledgeable.
Yahya ibn Ma'in: Acceptable. On another occasion: Trustworthy, no problem with him.