Indeed so.

And NeXTstep isn't a 1990s OS. It's a 1980s OS. v0.8 first demoed 12 October 1988 when the NeXT cube was launched; v1.0 shipped 18 September 1989.

NeXTstep influenced the Windows 95 UI in some ways -- the shaded 3D look, the idea of a fixed panel across the screen which could be both an app launcher and an app switcher.

But NeXT probably got that from Acorn RISC OS, which was shipping before NeXTstep was ever shown.

I've written about that, too: https://www.theregister.co.uk/Print/2013/06/03/thank_microso...