I am well aware that before World War 2 , the mainstream charedi position was anti-zionism, It was also the opinion of the mainstream gedolim not to go to the US (And this was the position of the Satmar Rebbe as well) too
However the war and the holocaust changed things dramatically and the mainstream position has been either zionist or non-zionist (like the Chazon Ish, not the anti-zionism of Muncatch or Satmar