For me, most impact was with the early Slaughter label stuff.
It is so long ago, that my memory might be doing tricks, but how I remember those early exposures to N., it was more death industrial, and very bleak. Of course it had that later on too, but felt that later works were certainly the boring noise category, but more... ehm.. playful? Still like playing things, changing sounds, slightly testing where to go, and sometimes work, sometimes feel like just testing out.
This said, it may be also Slaughter prod connection, that made impression of unusually dark and bleak in early releases?