Usama bin Zaid: No chain is provided and therefore the narration is baseless.

Ubai bin Ka’ab: No chain is provided and therefore the narration is baseless.

As’ad bin Zurarah: Ibn Uqda narrates through a chain of unknown narrators through A’sad bin Zurarah. Al-Thahabi weakens the report in his book on Al-Ghadir p. 97 and states that A’sad bin Zurarah died before the battle of Badr, which is explicit evidence that this is a fabrication.

Anas bin Malik:

There are three chains that have been provided for the narration of Anas bin Malik.

• The first is the narration of Ibn Uqda which comes through the path of Muslim Al-Mula’ee. Muslim is weakened by many hadith scholars, including Al-Fallas, Ahmad, Yahya, Al-Bukhari, Abdulrahman bin Mahdi, Yahya Al-Qattan, Al-Nasa’ee, Abu Hatim, Abu Zur’ah, Abu Dawud, Al-Tirmithi, Al-Jawzajani, Al-Daraqutni, Ibn Al-Madini, Al-Ijli, and Al-Saji. Refer to his biography in Tahtheeb Al-Tahtheeb.
• Another chain provided is the hadith of Al-Tabarani in Al-Mu’jam Al-Kabeer which comes through the path of Umaira bin Sa’ad. However, Yahya bin Sa’eed Al-Qattan said, “He is not one to be relied upon.”
• The last chain provided is from the hadith of Al-Khateeb Al-Baghdaadi in Tareekh Baghdad. The narration includes Hamdan bin Al-Mukhtar who is unknown in status and Ali bin Zaid bin Jud’aan, who is weakened according to most hadith scholars. Refer to our article on Congratulating Ali at Ghadir for more about the status of this narrator.

Conclusion: None of the narrators whose name states with an Alif has narrated hadith Al-Ghadir.