“I too, consistent with my adherence to R. Hirsch’s approach, and strongly anti-zionist”
It is a bit of an overgeneralization to say this, but I think the main difference between R’Hirsch the other “modern orthodox” rabbis I mentioned (and they would simply call themselves orthodox) is that three of the four I mentioned were outspoken Zionist leaders. (R’Weinberg was the exception.)
It should be noted that the Zionism of R’Reines and R’Soloveitchik was quite different from the Zionism of Rav Kook.