2. Maybe I’m wrong, but I didn’t think that the Mizrachi movement was started by Gedolim or that there were any Gedolim who considered themselves Mizrachi. But again, I could be wrong.
Amazing you could forget Rav Kook, It is true his zionistic leanings were not the majority and were a Daas Yachid at the time. He was definatly in those circles. I forgot exactly what, but he had something to do with Rav Elyshiv wedding (I think he was Masadar Kiddushin)