The Black Dahlia Murder was on the Original Metal Evolution chart. I didn't add them. :) I did add Shinedown and explained why in ther text. I am not sure what Criteria Sam Dunn used in defining this particular genre. Seemed from what I could see to be more based upon the year they released material (seemed 90s), and in the United States. It wasn't as obvious in other areas. Also some of these bands have been listed in other sub-genre posts as there is often a lot of Overlap.
Yesterday I did Swedish Extreme Metal which finally completes the Metal Evolution chart. I have a few more I want to do, but they'll be branches I provide that were not in this list. I'm even considering at one point a Folk Metal one and referencing your older posts.
I did manage to read and resteem your Swedish metal post, that was a great coverage of many bands I have come to look up to as a musician. Very well done indeed!