Here is a little patch I did to cover some Opeth from the still life era, but by adding mids and removing presence, you can get the growl typical of Blackwater Park’s production.
The reverb and the delays are functional, I toggle them depending on the riff.
I made the presets on a PRS S2 24 and some vintage hot pickups, nothing too metal.
It’s my own Google Drive: Neural DSP - Google Drive