holy shit nothingface. haven't heard that name in a while. used to be my favorite band back when i was still into nu metal.
they were sort of my gateway drug to melodic hardcore and early metalcore. they still hold up a bit as one of the better melodic alt-metal outfits with some hardcore influence
i basically went from nothingface to unearth in sort of a linear fashion
dying wish has been pro-palestine since before it was cool, the lead singer was throwing firebombs at cops through the george floyd protests
unearth (anti-fascist, eco-anarchist, closer to traditional metal then metalcore) knocked loose. foreign hands, boundries, stick to your guns (good melodic heavy hardcore, good politics) for weirder mathy stuff seeyouspacecowboy
If you are looking for nu metal specifically then you can’t do better than System of a Down & Maximum the Hormone. Also check out the Italian metalcore band Destrage, they are so underrated
every genre in one i fucking love that band. goes jazzy, punk, then rap, then pure japanese bubblegum pop and then out of nowhere is the sickest breakdown you've ever heard
yeah he didn't write any of the lyrics though, and just rode the coattails of the real creative people in the band and stayed quiet until he was a boomer and the band was retired
Look into metalcore bands, especially ones that came up in the hardcore scene. Stuff like Knocked Loose, seeyouspacecowboy, Dying Wish, Stray From the Path is firmly left wing.
If you're into dirty stuff there's a small scene of left wing black metal called "rabm"
I recommend Wolves in the Throne Room and Yellow Eyes (not political but spoke out against fascists) some small more Marxist bands are Clarion Knell and Sankara