Throughout the history of the Soviet Union, a position of Premier ("Prime Minister") existed.
Up until Stalin's tenure as the General Secretary, Premier was the ultimate post in the government. General Secretary position was not seen as important.
After Stalin, it was either combined with General Secretary, or sidelined,
As dumb as the name is, with that kind of access to information DOGE can easily become a real power center in the middle of the US government bureaucracy.