Artists starting with Bolt Thrower

Bolt Thrower, “Realm Of Chaos” (Earache, 1989)
A concept album about the end of life on Earth as we know it, from the most heavy-metalloid of Earache’s first wave of grindcore titans. Rhythms range from a stuttering crunch (picture a garbage truck trying to pulp a stack of motorcycles and a Port-O-Potty) to all-out assault velocity. Guitars are a chrome-plated mid-range roar, dense and immense. I find this compulsively listenable.
All great; 2 and 4 are representative.