Litvish

Chofetz Chaim

Rabbi Chaim Kanievsky

The Steipler

Rabbi Yosef Shalom Elyashiv

Rav Elazar Shach

Chazon Ish

Rabbi Aharon Yehuda Leib Shteinman

Rav Yosef Kahaneman (The Ponevezhher Rav)

Vilna Gaon

Rabbi Moshe Feinstein