I would agree that As You Drown is a death metal band, but they do have hardcore influence, so I included them. Listen to the song Ashes and there is a breakdown that starts at 0:45 that really reminds me of the style of breakdown a deathcore band would write.
2.2 Unpure / Infinitum Obscure / Volahn
2.13 Volahn / The Haunting Presence
4.5 Antaeus / Demoncy / Volahn