Abu Ja'far al-'Uqayli: Not famous, narrates munkar (rejected) hadiths
Abu Hatim al-Razi: Shaykh
Abu Zur'a al-Razi: Saduq (truthful)
Ibn Hajar al-'Asqalani: Saduq (truthful) but with some mistakes
Authors of Tahrir Taqrib al-Tahdhib: Saduq (truthful) Hasan al-Hadith, a number of trustworthy narrators narrated from him
Yahya ibn Ma'in: I don't know him