In updating my sansmirror site, I redid the available lens mount charts (autofocus lenses only). While there are still gaps in every mount, things have, at least for full frame, gotten more even.
Here are the full frame (FX in Nikon jargon) lenses at the moment. We'll start with zooms in the first table (primes are in the table that follows):
Nikon's current weakness is probably wide angle. They need wider primes and more wide zoom options to better balance out their offerings.