You talking about this Eliakim, son of Josiah, who was made king
over Judah?
2 Chronicles 36 : 1-8
1 And the people of the land took Jehoahaz son of Josiah and made
him king in Jerusalem in place of his father.
2 Jehoahaz was twenty-three years old when he became king, and he
reigned in Jerusalem three months. 3 The king of Egypt dethroned
him in Jerusalem and imposed on Judah a levy of a hundred talents
of silver and a talent [c] of gold. 4 The king of Egypt made
Eliakim, a brother of Jehoahaz, king over Judah and Jerusalem and
changed Eliakim's name to Jehoiakim. But Neco took Eliakim's
brother Jehoahaz and carried him off to Egypt.
5 Jehoiakim was twenty-five years old when he became king, and he
reigned in Jerusalem eleven years. He did evil in the eyes of the
LORD his God. 6 Nebuchadnezzar king of Babylon attacked him and
bound him with bronze shackles to take him to Babylon. 7
Nebuchadnezzar also took to Babylon articles from the temple of the
LORD and put them in his temple there.
8 The other events of Jehoiakim's reign, the detestable things he
did and all that was found against him, are written in the book of
the kings of Israel and Judah. And Jehoiachin his son succeeded him
as king.
or
This Eliakim son of Hilkiah
2 Kings 18:37
Then Eliakim son of Hilkiah the palace administrator, Shebna the
secretary and Joah son of Asaph the recorder went to Hezekiah, with
their clothes torn, and told him what the field commander had
said.
Isaiah 22 is talking about Eliakim son of Hilkiah, his job is
the palace administrator, Shebna on the other hand is the
secretary.