Source of Pain is a Phoenix, Arizona crossover/thrash metal band formed in 2024, blending the hardcore aggression of crossover with straight-ahead thrash metal speed in the tradition of the genre's most frenetic practitioners.

Soured Ground is a Syracuse, New York band formed in 2016 that straddles thrash metal, crossover, and crust punk, embodying the raw, politically charged energy where the hardcore and metal underground intersect.

Spare Change is a crossover thrash band from Chicago, Illinois, formed in 2015. They operate squarely in the tradition where thrash metal collides with hardcore punk, delivering the fast, irreverent, and abrasive energy that has defined the crossover genre since the 1980s.

Spazztic Blurr is a Portland, Oregon crossover thrash and grindcore band active since 1988, making them one of the Pacific Northwest's longest-running extreme acts and a veteran of the era when hardcore punk and thrash metal first collided.

Spik Metal is an Orlando crossover thrash band formed in 2016, merging the speed and riff-first intensity of old-school thrash with hardcore punk energy and a fierce Latinx identity.

Spine Buster is a College Park, Maryland crossover thrash band formed in 2012, fusing thrash metal's technical aggression with the blunt energy of hardcore punk in the tradition of classic crossover acts.

Spirit Flaw is a Philadelphia thrash and crossover band formed in 2020, combining the aggression of hardcore punk with the riff-driven attack of thrash metal in the tradition of East Coast crossover.

Stand Defiant is an Asheville, North Carolina band formed in 2019, blending the raw aggression of crossover thrash with metalcore's structural intensity and the speed and riff density of traditional thrash.

Norfolk, Virginia crossover thrash band formed in 2022, State of Emergency channels the aggression of hardcore punk and the riff intensity of thrash metal into a lean, speed-driven attack.