Khalid bin Al-Waleed:

No chains have been provided for his narration and therefore cannot be relied upon.

Khuzaima bin Thabit:

• The hadith of Khuzaima bin Thabit comes through Asbagh bin Nubata. In the report, he is among those that Ali asks if they have heard the hadith of Ghadir. Khuzaima is one of those that affirms that he did. However, the chain includes mostly anonymous narrators. Also, it include Al-Asbagh bin Nubata who was weakened by many hadith scholars. Abu Bakr bin Ayyash called him a liar as well. See his biography in Mizan Al-I’itidal.
• A second chain can be found through the hadith of Ibn Uqda. It is narrated through Omar bin Abdullah bin Ya’ala bin Murra from his father. Both men have been criticized as weak narrators. Refer to their biographies in Mizan Al-I’itidal.

Khuwailid bin Amr:

No chain is provided for the report. Al-Amini does point out that the narration exists in Hilyat Al-Awliy’a, but he does not provide a page and volume number, which is unlike him.

Conclusion: Neither of the two men have had hadith Al-Ghadir authentically attributed to them.