Toledo, Ohio experimental and progressive death metal band formed in 2015, pushing the genre toward unconventional structures and sonic exploration while retaining death metal's core intensity.

Progressive death metal band from Reading, Pennsylvania, formed in 2025, combining the technicality and compositional scope of progressive metal with death metal's extreme foundation.

Subversion is a groove and progressive metal band from Asheville, North Carolina, formed in 2011, blending syncopated rhythmic heaviness with progressive song structures in the vein of the Appalachian metal underground.

Succession is a progressive metal band from Denver, Colorado, formed in 2004, building elaborate, technically rich compositions that reflect the Mile High City's long-running appetite for expansive, forward-thinking heavy music.

Suede Wilson is a progressive power metal project from Lafayette, Louisiana, formed in 2017, blending melodic power metal with progressive rock arrangements, electronic elements, and dark ambient passages into an eclectic and unconventional sound.

Laredo, Texas outfit formed in 2012 that fuses progressive sensibilities with death-doom, crafting dense, slow-burning compositions that draw equally from melodic death metal and oppressive doom atmospheres.

Originating in Forest Lake, Minnesota, Suffering Hour is an avant-garde black/death metal band formed in 2017 known for their dissonant, labyrinthine compositions and refusal to adhere to genre conventions, earning widespread acclaim in the underground with releases like The Cyclic Reckoning.

Toledo, Ohio progressive death metal band formed in 2024, pursuing technically ambitious compositions that push the boundaries of conventional death metal.

Sullvation is a Chicago, Illinois progressive heavy/power metal band formed in 2022, weaving together melodic power metal hooks, progressive structures, and the raw energy of classic heavy metal.

Sumptus Ignis is a progressive death/doom metal band from Key Largo, Florida, formed in 2017, weaving dense, slow-burning compositions that balance mournful doom passages with technical death metal aggression.

Suncinder is a Detroit, Michigan act formed in 2019 that melds progressive melodic death metal with deathcore, layering technical riffing and melodic complexity over punishing, breakdown-driven passages.

Sunlander is a progressive/thrash metal band from Norman, Oklahoma, formed in 2017, combining the rhythmic aggression of thrash with the compositional complexity and time-signature experimentation of progressive metal.

Sunless are a progressive death metal band from Minneapolis, Minnesota, formed in 2016, known for intricately layered compositions that blend dissonant technical death metal with atmospheric and avant-garde sensibilities. Their work draws comparisons to Gorguts and Ulcerate in its dense, labyrinthine approach to extreme music.

Sunrise Dreamer is a progressive metal project from New York, formed in 2021, pursuing the melodic and compositionally ambitious side of the genre with a focus on dynamic songwriting and technical musicianship.

Sunrunner is a heavy metal and progressive rock band from Portland, Maine, formed in 2005, blending melodic hard rock sensibilities with progressive metal structures in a sound informed by the classic and modern ends of the genre.