Windows NT 3.1 (1993) and its successors (NT 4.0, Windows 2000, XP and the server equivalents) was independent of DOS, but was separate to the other OSes (Windows 3.1, 3.11, 95, 98, ME) that ran with a hybrid 16-bit/32-bit monolithic kernel on top of some sort of MS-DOS.

Yep, being of the NT lineage. But it was not really sold to the consumer market (tough it had better gaming support via directx than any previous NT version). XP was the first consumer NT based Windows release.