I'm a fan of deathcore, listen to Despised Icon, a couple good songs off the top of my head are Tears of the Blameless, MVP, Fainted Blue Ornaments, and Furtive Monologue.
Black Dahlia Murder is also awesome, check out Deathmask Divine by them, Nocturnal, and What A Horrible Night To Have A Curse (their demo is called What A Terrible Night To Have A Curse, I mean for you to listen to that song).
Veil of Maya is the bomb too, Crawl Back and It's Not Safe To Swim Today will rip your face off. They're super melodic in their instrumentals as well, and you may like them, or parts of them, even if you're not usually into hardcore music.
Deathcore is kind of tough to describe as a subgenre, but those three bands IMO are some of the greatest in that subgenre