“Which minhagim? Which “chareidim”? The Sephardic chareidim? The Chasidic chareidim? Which “Big Rabbis”?”
Please don’t play dumb… You are obviously aware of “The Gedolim.” Ever hear of Rav Kanievsky, Rav Shteinman… All Charedim will look to the Gedolim for guidance and leadership.