Straight Savage Style - A classic: Everybody that looked up beatdown knows the "Hardcore Pride" song. Besides that demo I know literally nothing about them. I wrote with the singer of Sand about them because I was curious if they have more. He told me they have like 2 albums out, but I never found something. Not even a mention of these albums elsewhere.
43 Urban - a japanese beatdown powerhouse. I know a lot of US meatheads loving these guys.
Murder Within Sin
Kill Dem Already
Press On Ahead - slow Slayer Riffs with gnarly vocals
Public Menace - more modern "Deathcore" vibes. Still hard tho