I'd consider it minimally processed under the NOVA classification, if it is raw Nori. However some brands may add salt, oils, flavorings or other additives that

I'd consider it minimally processed under the NOVA classification, if it is raw Nori. However some brands may add salt, oils, flavorings or other additives that might push it closer to being ultra processed. If its raw Nori created traditionally I would say its minimally processed/unprocessed