Older millennial 2000s hard rock: Breaking Benjamin, Tool, A Perfect Circle, Chevelle, Shinedown, Disturbed, Papa Roach etc. Then had a metalcore era: Killswitch Engage, Avenged Sevenfold, Bullet for my Valentine etc. For the last decade or so, I've gotten into Scandinavian melodic death metal: Dark Tranquillity, In Flames, Soilwork, Insomnium, Amorphis, etc.