Zushy, rav matisyohu, he should have a refuah shlaima, is a Mashgiach, and a big person, but to my knowledge was never a rosh yeshiva.
Lakewood roshei Yeshiva i assumed were self understood.
Reb E: good point. Rav Frankel of vayalipol, rav Ephraim wachsman, and rav Shmuel dishon come to mind, but I’m not very familiar.