I forget which one, but one of the Between the buried and me albums has an instrumental release. Honestly, all of their albums I recommend regardless because the musicianship is excellent.

Scale the summit is more along the lines of prog metal but purely instrumental (I think).

Protest the hero is prog metal that has a near minimal amount of death growl (still some).

Animals as leaders which has been mentioned by several people.

Exivious is decent, I’m like 90percent sure they’re instrumental.

There’s a Japanese band called té, which is way more prog rock but you might like that.

Death, despite being one of the progenitors of death metal, is less intense on the death metal growl vocals. To me, early death metal in general is a bit different sounding than modern death metal. Regardless, Death has a pure instrumental song called Voice of the soul which is part acoustic. It’s probably one of the most acoustically beautiful songs written in the genre.

Either “I’m not dead yet” or “I’m still alive” with a somewhat halfhearted “I guess…” Trailing behind.

Once upon a time I was a little more cheerful and gave answers like “Celebrating my streak of consecutive days lived”.

Free: gently used jerk-off-chair. Never bare-assed it, but spritzed with fabreez anyway. Sticky texture is from woodfinish/varnish. Should hold most earthly humans, but if you’re worried about it holding your weight, you can come try it out. Pick-up only.

When you carry it around, do you carry it fold up or fold down? Or carry it flat? If so, West Coast up or east coast up?

This reminds me of the etymology of バカ (baka, stupid in Japanese).

I don’t know if that’s what’s intended or not.