I don't know so many good post 2000's Norwegian black metal bands to be honest, the majority of my favourite "new" black metal comes from outside Scandinavia (Poland, Ukraine, France etc.)
However Djevel (Norway) come to mind, although I'm not a big fan they seem pretty liked, they're not exactly undiscovered though. Also Deathcult (Norway), but again due to the Taake connection they're probably quite well known at this point!