Rabbi Yaakov Yisrael Kanievsky, known as The Steipler or The Steipler Gaon, was a rabbi, Talmudic scholar, and posek.
Rabbi Moshe David Tendler, A Rosh Yesiva , American rabbi, Professor of biology and expert in medical ethics .
Meir Leibush ben Yehiel Michel Wisser (Russian: Меир-Лейбуш бен Йехиэл-Михл) better known as The Malbim (Hebrew: מלבי"ם), was a rabbi, master of Hebrew grammar, and Bible commentator. The name "Malbim" was derived from the Hebrew initials of his name. He used this acronym as his surname in all his published works, and became known by it in common usage.