Rav Malkiel Kotler spoke in Yiddish, as did Rav Yaakov Perlow, as did the Klausenberger Rebbe, as did the Gerrer Rosh Mesivta – Rav Dovid Olewski, and even Rav Meir Lau partially spoke in Yiddish!
English speakers (among the rabbonim) were HaRav Yitzchok Scheiner, Rav Yissocher Frand, Rav Yaakov Hillel and Rav Yisroel Meir Lau.
That’s 4 Yiddish speaking rabbonim speakers to 4 English speaking rabbonim.