Covington, Kentucky's Sin have practiced black metal since 2014, sitting just across the Ohio River from Cincinnati in a region not particularly known for the genre's cold aesthetic. Their black metal approach and Northern Kentucky base give the project a distinctly out-of-place, isolationist quality.

Salt Lake City's Sindar are an ambitious multi-genre project formed in 2020 that moves fluidly across progressive metal, post-black metal, and death metal — a combination that reflects both the genre-blurring ambitions of the modern extreme metal underground and a name drawn from Tolkien's Grey Elves. Their breadth of influence makes them one of the more intellectually restless acts in the Utah scene.

Tempe, Arizona's Singularity have built their sound around technical black/death metal since 2012, bringing a labyrinthine compositional density to the desert Southwest's extreme metal scene. Their work favors dissonant complexity and blasting intensity over accessibility, firmly in the tradition of technically demanding extreme metal.

One-man melodic black metal project by Knell, inspired by Dissection, Vinterland, and Sacramentum. Debut album The Everlorn released 2020.

Operating out of Orange under the banner of raw black metal since 2017, Sinister Tradition pursue an orthodox black metal orthodoxy built on harsh, stripped-down production and unrelenting malevolence. Their dedication to the genre's most austere conventions aligns them with the American underground's rawer, anti-commercial black metal contingent.

Los Angeles-based Sink Shower have been carving their niche in the city's extreme metal underground since 2018, combining black metal's abrasive atmosphere and tremolo intensity with the brute physicality of death metal in a way that feels cold and urban rather than pastoral. Their music reflects the disorienting density and alienation of Southern California's sprawling megalopolis.

A California-based one-person project formed in 2021, Sinn Demonisk fuses raw black metal austerity with crust punk's d-beat aggression, producing lo-fi, deliberately abrasive material with no interest in polish or compromise.

Omaha, Nebraska's Sinne emerged in 2022 playing speed/black metal with a punk backbone, combining the reckless velocity of first-wave black metal with the rawness of '80s hardcore and the Midwestern underground's DIY ethos.

Milwaukee, Wisconsin's Sinner have operated in the hard rock and heavy metal space since 2003, drawing on the hook-heavy, leather-and-chrome tradition of classic American heavy metal with a workmanlike Midwestern directness.