This used to be (most of) my S-mount lens line up:

But despite all being excellent performers I found I hardly used the telephoto lenses, and the W-Nikkor 2.5cm F4 vignetted too much for my liking, so they have new homes now. As do the duplicates in the 35mm and 50mm focal lengths. So the kit I currently have (and therefore I suppose my ideal Nikon RF lens kit) is:
Nikkor-O 2.1cm F4 - classic 1960s rendering and very minimal vignetting for a vintage wide angle
W-Nikkor 2.8cm F3.5 - sharp, light, compact, great for B&W film, and works well with the SP finder
W-Nikkor 3.5cm F1.8 2005 - lovely rendering wide open with a nice "glow" and very sharp stopped down
Nikkor-S 5cm F1.4 - I have a good copy! Nice glow wide open and very sharp stopped down
Four lenses. That's it.
Edit: I forgot to add my 1938 uncoated CZ Tessar 5cm F2.8. It works quite well on Nikon RFs - just need to compensate for a little back focus at close distances.

But despite all being excellent performers I found I hardly used the telephoto lenses, and the W-Nikkor 2.5cm F4 vignetted too much for my liking, so they have new homes now. As do the duplicates in the 35mm and 50mm focal lengths. So the kit I currently have (and therefore I suppose my ideal Nikon RF lens kit) is:
Nikkor-O 2.1cm F4 - classic 1960s rendering and very minimal vignetting for a vintage wide angle
W-Nikkor 2.8cm F3.5 - sharp, light, compact, great for B&W film, and works well with the SP finder
W-Nikkor 3.5cm F1.8 2005 - lovely rendering wide open with a nice "glow" and very sharp stopped down
Nikkor-S 5cm F1.4 - I have a good copy! Nice glow wide open and very sharp stopped down
Four lenses. That's it.
Edit: I forgot to add my 1938 uncoated CZ Tessar 5cm F2.8. It works quite well on Nikon RFs - just need to compensate for a little back focus at close distances.