I had tried once before when I had only heard the "Baño de sangre" EP and "Sesos derramados" album. They've released so much more since then. I just found out they had made a Bandcamp.

Listen:
http://postmortemneurofetishbionecrosis1.bandcamp.com/
https://rectalpurulence.bandcamp.com/al ... tro-humano

Physical releases:
https://www.discogs.com/artist/4181483- ... ionecrosis
https://ftolrecords.bigcartel.com/produ ... igipack-cd

And out of this "so much more", can you point to specific releases that you think are definitely metal?

I looked through some of their releases and these stood out. Most of them are pretty short. The majority of the bands releases are pretty raw/noisy so its kind of hard to hear the riffs clearly enough to judge them.

https://postmortemneurofetishbionecrosi ... -rehearsal
https://postmortemneurofetishbionecrosi ... -w-cannibe
https://postmortemneurofetishbionecrosi ... as-humanas
https://postmortemneurofetishbionecrosi ... of-remains
https://postmortemneurofetishbionecrosi ... tro-humano

Eh. No.

I haven't been getting notifications of replies. Decided to check up on this.
I see someone else already gave you a list. I have other releases on tape that aren't on Bandcamp but I haven't had a chance to digitize them.

This is the EP that I first submitted them for:
https://postmortemneurofetishbionecrosi ... sangre-e-p

I still think they should have been approved from this CD. Riffs from that album were reused by Slaughterhouse, same guitarist with the same style of playing. Slaughterhouse were approved.