No, journalists who exposed corrupt industrialists, politicians, and the wealthy during the late 19th and early 20th centuries were typically referred to as muckrakers. Mugwumps were a political faction in the late 19th century that sought to remain independent from party politics.
Mugwumps- Reformers. A group of reformers who wanted civil service reform.
Carl Schurz was a German-American immigrant leader. In 1884, Schurz backed the Democrat, Grover Cleveland. Schurz led an influential group of Republican leaders known as "Mugwamps".
The mugwamps