The Konstellation is a progressive black/death metal band originally from Budapest, Hungary, formed in 2020. They combine progressive complexity with extreme metal intensity, bridging black and death metal styles.

The Last Dodo from Toulouse deliver progressive metal named after the extinct Mauritian bird, exploring themes of finality and irreversible loss since 2017. Their concept channels the melancholy of extinction through complex, technically ambitious compositions from southwestern France.

The Legion of Doom is a heavy/groove/progressive metal band from Nottingham, active since 2011. Their music fuses the rhythmic power of groove metal with progressive complexity and traditional heavy metal hooks from the East Midlands.

The Masquerade is a symphonic/progressive metal band from England, active since 2014. Their music combines orchestral arrangements and theatrical flair with the technical precision of progressive metal, creating elaborate and dramatic compositions.

The Massacre Cave is a progressive heavy/thrash/groove metal band from the Isle of Eigg in the Scottish Inner Hebrides, active since 2012. Perhaps the most remote metal band in Britain, they take their name from a dark chapter of island history and deliver ambitious metal from a community of fewer than 100 people.

The Meaning Under is a progressive metal band from Padua, Italy, formed in 2016. They explore complex compositions and dynamic arrangements within a progressive metal framework.

The Moor is a progressive metal band from Venice, Italy, formed in 2013. They create intricate, technically ambitious progressive metal from the historic lagoon city.

The Ocean formed in Berlin, Germany in 2000 under the direction of guitarist Robin Staps, evolving into a large collective of rotating musicians that produced sprawling, conceptually ambitious post-metal. The band's discography traces geological and philosophical themes across concept album series, most notably the Precambrian diptych (2007) and the Phanerozoic sequence (2018–2020), as well as the acclaimed Pelagial (2013), a single continuous piece representing a descent through ocean depths. Their own label, Pelagic Records, grew out of the project and became a significant home for progressive and post-metal acts. Holocene (2023) marked a further conceptual departure.

The Ocean Collective is a progressive/atmospheric sludge/post-metal band from Berlin, Germany, active since 2000 and released through Metal Blade Records. Their ambitious concept albums — "Precambrian," "Heliocentric/Anthropocentric," "Pelagial," and the "Phanerozoic" series — map geological epochs through expansive, intellectually ambitious post-metal.