Cyrus's treasurer Mithredath counted out the temple articles to whom?

Answer: Sheshbazzar

Mithredath counted the articles out to Sheshbazzar, prince of Judah, who brought all 5,400 of them from Babylon to Jerusalem.

“Cyrus king of Persia had them brought out by the hand of Mithredath the treasurer, who counted them out to Sheshbazzar the prince of Judah.”— Ezra 1:8 (BSB)