Methylhate is a sludge metal act from Perugia in Umbria, delivering toxic, crushing heaviness since 2017. The band's chemical-compound name matches the caustic, corrosive nature of their sludge sound.

Metide is a sludge/doom/post-metal band from Bergamo, Italy, formed in 2019. They channel crushing sludge-doom through abrasive riffs and oppressive weight.

Mezereon is a doom and sludge metal band from Oulu, Finland, formed in 2023. They channel oppressive doom-sludge from the northern Finnish city.

Midsund is a doom/sludge metal band from Amiens, France, formed in 2010. They channel crushing sludge-doom through abrasive riffs and oppressive weight.

Might is a sludge metal and noise rock duo from Hanover, Germany, formed in 2020 by Ana Muhi and Sven Missullis. Their abrasive doom-laden heaviness is offset by unexpectedly melodic vocals, enhanced live by video projections that transform the duo into an immersive audiovisual experience.

Mighty Papal Dome Shape is a two-piece sludge and noise project from Gladbeck, Germany, formed in 2017. Their sound is built on pure amp worship and droning heaviness, conjuring evil tidings from the depths of an opium dream.

Milestone One is a sludge/post-metal band from Moscow, Russia, formed in 2013. They blend crushing sludge with post-metal's atmospheric expansiveness.

Mines is a sludge metal, noise rock, and grunge band from Swansea, Wales, formed in 2018. They channel crushing sludge and noise from the South Wales coast.

Mirny is a sludge/post-metal/hardcore band from Samara, Russia, formed in 2019. They blend crushing sludge with post-metal's atmospheric expansiveness.