Ha, thanks! I started researching some of them at first, Nihonium was discovered in Japan but thought it would be offensive to name it Japonium, so in honor I went with a Japanese sound/look for the album (even though they're from Sweden).
Right, there's a good amount of non-metal on this list. It's not the only qualifier. When I could however, I used a metal album to represent said metallic element.
Lol, I could see it, Ulcerate-based lifeforms. If I didn't like my Uranium pick I'd put Ulcerate Stare Into Death and Be Still in the 68 spot, atomic number 92, the most solid of metals under the abbreviation U.