Palm Springs, California's Shrine of Resurrection, formed in 2021, pursue progressive death metal filtered through metalcore's structural sensibility — ambitious compositions that balance technical complexity with the direct aggression of the modern heavy underground.

San Diego progressive metal project Singularity Architect launched in 2024 with a conceptually ambitious approach to the genre, weaving intricate arrangements and technical musicianship into expansive song structures. As a recently formed act in the fertile Southern California progressive metal scene, they draw on the region's tradition of technically driven heavy music.

A California progressive death metal project formed in 2024, Sinthetik Sentienz blends the harmonic complexity and compositional ambition of progressive metal with the brutality and technical demands of modern death metal.

Hailing from Ontario, California, Slanderus blend thrash ferocity with progressive architecture, building songs that shift between angular riffing and more expansive, technically minded passages. Active since 2013, they represent the Inland Empire's commitment to metal that rewards close listening.

San Diego progressive metal outfit formed in 2022, blending metal's technical weight with hard rock's melodic sensibility into an accessible yet complex sound. Slavior occupy a crossover space where progressive structure meets arena-ready hooks.

San Francisco progressive doom metal band formed in 2023, crafting elaborate, slowly unfolding compositions that wed psychedelic atmosphere with heavy, deliberate riffing.

Solus are a Los Angeles post-black metal project active since 2007, weaving atmospheric and introspective textures into a black metal foundation in the manner characteristic of the city's eclectic extreme metal underground.

Sombra are an Anaheim, California progressive/technical death metal band formed in 2019, pursuing a complex and intricate approach to extreme metal that emphasizes compositional sophistication alongside raw brutality.

Sombre Holiday are a Riverbank, California progressive metal band with roots going back to 1994, building a catalog of technically ambitious and melodically rich heavy music over three decades of activity in the Central Valley underground.