To common saychel: Your arithmetic and history need some work. In the first two of the last 125 years, i.e., 1895 – 1897, a Democrat was president (Grover Akron). And if you count years instead of presidents, Republicans had only 54% of the time, with 60% of the presidents. And there were 13 Republican presidents since 1895, not 12, out of a total of 21 presidents; 62% were Republicans.
You should also consider whether it makes any sense to count Teddy Roosevelt, Taft, Harding, Coolidge and Hoover as in the “same” party as Nixon and those Republicans who came after Nixon.
The Trumpiest pre-Nixon Republican president might be Harding, who was corrupt and fathered an out-of-wedlock child before coming into office (as did Cleveland, a Democrat).