Black Cobra are a sludge and doom metal duo from Los Angeles, California, formed in 2001 by guitarist/vocalist Jason Landrian and drummer Rafael Martinez, who generate a surprisingly massive sonic footprint for a two-piece. Their early releases Bestial (2006) and Feather & Stone (2007) established a heavy, groove-oriented sound drawing equally from doom, sludge, and noise rock, and the band maintained a prolific output throughout the 2000s and 2010s with releases on Southern Lord and Season of Mist.

Black Sheep Wall is a Moorpark, California sludge and doom metal band formed in 2006, named after a StarCraft cheat code. Their minimalist, downtuned approach draws comparisons to Eyehategod and early ISIS, delivering some of the heaviest and most oppressive post-metal to emerge from the American West Coast. Notable releases include No Matter Where It Ends (Season of Mist, 2012) and I'm Going to Kill Myself (2015), albums that pair crushing riff architecture with extended dynamic tension.

Black Tusk formed in Savannah, Georgia in January 2005 when members of disbanding punk bands began playing together on the same street, quickly gravitating toward what they describe as 'swamp metal'—a particularly murky strain of sludge that AllMusic linked to the broader Savannah scene alongside Baroness and Kylesa. After early releases on Hyperrealist and a series of splits, the band signed to Relapse Records in 2009, releasing Taste the Sin (2010) and Set the Dial (2011). Bassist Jonathan Athon died in November 2014 from injuries sustained in a motorcycle accident.

Bongzilla is a stoner, sludge, and doom metal band from Madison, Wisconsin, formed in 1995, whose catalog is among the most explicitly cannabis-themed in American heavy metal. The band released a string of albums on Relapse Records—including Stash (1999), Apogee (2001), Gateway (2002), and Amerijuanican (2005)—before entering a hiatus from 2009 to 2015. After reforming and returning to the touring circuit, they released their sixth studio album Dab City via Heavy Psych Sounds in June 2023, cementing their status as seminal figures in the American sludge underground.

Chat Pile are an Oklahoma City band whose music drags noise rock, sludge metal, industrial tension, and grotesque storytelling into a sound that feels filthy, bleak, and unmistakably contemporary. Formed in 2019, the quartet first made a mark with This Dungeon Earth and Remove Your Skin Please before God's Country pushed them from underground fixation to one of heavy music's most discussed new bands. Cool World expanded the same sense of dread with sharper pacing and a wider emotional vocabulary, while the band's soundtrack and split releases showed how flexible their ugliness can be. Chat Pile fit metal and noise-rock scope through grinding bass, scraping guitars, punishing drums, and vocals that land somewhere between confession, panic, and accusation. Their music is heavy less because it chases speed than because it traps the listener inside repetition, bad air, and moral exhaustion. The Oklahoma setting matters as atmosphere: strip malls, labor, violence, boredom, and decay become part of the sonic language. Chat Pile make discomfort feel architectural, turning noise-rock abrasion into vivid social horror.

Both emerging from Richmond, Virginia's extraordinarily fertile doom scene, Cough and Windhand joined forces for the 2013 split LP Reflection of the Negative, a 37-minute immersive descent through suffocating sludge and narcotic stoner doom that earned an effusive Pitchfork review and positioned Richmond as a center of American heavy music. Separately, Cough — formed in 2005 — trafficked in harrowing, noise-infused doom, while Windhand — formed in 2008 — developed a more melodic, hypnotic strain of the genre, their collaboration distilling both bands' strengths into a landmark document of 21st-century doom.

Down are a New Orleans heavy metal supergroup whose music turned Southern sludge into a landmark sound of the 1990s and beyond. Formed in 1991 by musicians connected to Pantera, Corrosion of Conformity, Crowbar, Eyehategod, and other heavy acts, the band brought together Phil Anselmo, Pepper Keenan, Kirk Windstein, Jimmy Bower, and later Pat Bruders and other members across different eras. NOLA remains the essential statement, blending Sabbathian riffs, bluesy Southern atmosphere, swampy tempos, and Anselmo's raw vocal presence into songs that felt both massive and lived-in. Down II, Down III, and the EP series continued the band's mix of groove, heaviness, and regional identity. Down fit metal scope directly through sludge metal, Southern metal, and heavy metal, with a legacy that shaped countless riff-focused bands. Their best work does not sound like a side project despite the famous resumes involved. It sounds like musicians translating a shared landscape into weight: humidity, sorrow, addiction, camaraderie, and defiance all pushed through amplifiers. Down's riffs feel carved from New Orleans heaviness, slow enough to sink and strong enough to endure.

New Orleans' Eyehategod are the definitive sludge metal band, dragging blues-soaked doom through a swamp of feedback, distortion, and misanthropic fury since 1988. Mike IX Williams' anguished howl over Jimmy Bower's crushing, tempo-shifting riffs on 'Take as Needed for Pain' and 'Dopesick' established the blueprint that inspired countless sludge and doom acts. Their sound is as much a product of New Orleans' oppressive heat and hard living as any musical influence, making them inseparable from their environment.

Eyes of the Sun is a doom and sludge metal trio from Brooklyn, New York, formed in 2007 by vocalist/bassist Jeff Blanchard and guitarist Miguel De Jesus Jr., with drummer Chris O'Neil completing the lineup. The band endured significant setbacks when Hurricane Sandy destroyed their rehearsal space at Translator Audio in New York and wiped out their equipment, but ultimately signed to Metal Blade's Blacklight Media imprint and released their debut Chapter I (2018). Blanchard is also the owner of the Brooklyn metal bar Lucky 13 Saloon, a venue closely connected to New York's underground doom scene.