Louisville, Kentucky's Seidr draw their name from Old Norse sorcery and their sound from the atmospheric end of doom/death metal, crafting music that moves between mournful heaviness and bleaker, more ethereal passages. Formed in 2018 in a city with a well-worn tradition of extreme and experimental heavy music, they bring a painterly, introspective quality to a genre often more concerned with sheer brutality.

Formed in 2016 in Enid, Oklahoma, Self Inflicted drag the Southern metal tradition through the murk of sludge and doom, delivering slow-motion riffs drenched in feedback and regional grit. Their sound carries the weight of the Great Plains — unhurried, oppressive, and built low to the ground. Equal parts stoner haze and Southern hostility, they're a fitting product of Oklahoma's hard-edged underground.

Out of Layton, Utah since 2008, Septic Baptism have spent nearly two decades building suffocating walls of sludge and doom from the high desert. Their music moves at a glacial, punishing pace, drawing equally from the corrosive weight of sludge and the mournful slow-burn of traditional doom. They are one of Utah's most enduring heavy underground acts.

Birmingham, Alabama act Seraphic Entombment have been crafting suffocating death-doom since 2019, drawing on the genre's most crushing traditions — glacial tempos, cavernous low-end, and an oppressive atmosphere that earns the city's heavy reputation.

Seattle's Serpent Rider trade in epic heavy and doom metal — towering, slow-moving riffs anchored in classic doom traditions, carrying the Pacific Northwest's atmospheric weight with a sound that leans into grandeur and mythic heaviness since 2019.

Serpentine Path is a doom and death metal band formed in New York in 2011, built around all three members of the cult doom act Unearthly Trance together with Tim Bagshaw, a founding member of Electric Wizard and Ramesses, and later augmented by Stephen Flam of New York doom-death legends Winter. The project's sound leaned toward a slow, crushing death-doom approach heavier and more deliberate than any of the members' previous bands. The band released a self-titled debut in 2012 and followed with Emanations in 2014 before going on hiatus in 2016, with Bagshaw shifting focus to With the Dead.

Seven Sisters of Sleep is a sludge and doom metal band from Southern California, formed in mid-2009 from members of Tafkata and The Arm and Sword of a Bastard God. The band built their sound on a foundation of occult-themed, downtuned sludge drawing from doom, death metal, black metal, and d-beat, releasing records on A389 Recordings and Southern Lord, among others. They released multiple full-length albums before disbanding following legal troubles involving a former member, leaving behind a body of work regarded as important within the Southern California heavy underground.

Santa Barbara, California's Seventh Circle occupy a darkly syncretic extreme metal space, weaving together the bleakness of black metal, the heaviness of death metal, and the grinding weight of doom into a single suffocating whole. Active since 2008, they've developed a reputation for uncompromising, multi-dimensional heaviness that refuses easy categorization.

Severed Boy is a Boston, Massachusetts project formed in 2021 that dissolves the lines between black metal, death metal, and funeral-paced doom. Their Bandcamp presence reflects an underground one-person or small-band aesthetic, channeling bleakness through a dense, multi-genre lens.