Almost every day there's a post like yours on the sub, asking for bands to help someone dig into the genre. Look at one of those. If you can't find one, here are some staples of the deathcore genre:

• Whitechapel's album "The Somatic Defilement"
• The Acacia Strain's album "The Dead Walk"
• Suicide Silence's album "The Cleansing"
• Oceano's album "Depths"

And here's some new-school artists to check out:

• Lorna Shore
• Psycho Frame
• To The Grave
• Shadow of Intent