6. Jimmy Bower
Jimmy "Bower Power" Bower is sludge-metal royalty. Bower has been a member of Eyehategod, Crowbar, Superjoint Ritual, and is best known as the rhythmic force behind Southern-sludge supergroup, Down. Bower's playing just reeks of Bill Ward's influence, and we feel Bower's dedication to enriching the lexicon of post-Sabbath style drumming more than warrants a place on this list.
5. J Mascis
J Mascis might be best known for his fuzzed-out guitar work and introspective vocals via his role as the frontman of Dinosaur Jr., but Mascis began his musical career as the drummer of the hardcore band Deep Wound. For this list, we're going to check his metal band, Witch, because Witch fucking rules. Also, Witch's music has some distinctly Sabbathian moments.