Like what exactly?
There are clearly lenses in need for replacement in the line-up of Nikon, that's obvious. But I cannot think of any recent release that isn't best in class or very close to best in class, especially in the high end.
- The super tele lenses
- The 70-200 f2.8 E FL
- The 24-70 f2.8 VR (the Sigma is pretty close 2 years later)
- The 19mm T/S
- The 105mm f1.4
- The 28mm f1.4
- The line up of f1.8 penses, some better than other but none weak.
Cheers,
Bernard
The superteles are also several years newer than the Canon superteles. They keep leapfrogging each other. Of particular note, the 200-400 is the only supertele that's not significantly newer than the Canon equivalent, and the only one that performs significantly worse. I'd expect the new 180-400 to soundly beat the Canon (being 8 years newer) and any new Canon superteles to beat the current Nikons. Technology tends to move like that.
The 80-400 is significantly worse than the Canon and Sony 100-400s. There's an excuse for losing to the Sony, which was a 2017 release (and is even better than the Canon, and sharper even than the Canon 200-400) but not the Canon, which was released at roughly the same time.
The 24-70 VR is probably a wash with the Canon, despite being much newer. Weaker centre, but sharper peripheries and has VR.
The 24-120 is a poor cousin to Canon's 24-105, whether you're comparing it to the old (older than the Nikon) or new version.
The 105mm f/1.4 is great, but is it actually materially better than the Sigma 85/1.4 and 135/1.8 lenses, both of which are significantly cheaper?
Regarding UWAs, they have nothing that comes close to competing with the Canon and Sony 16-35 f/2.8 lenses, or the 11/12-24mm f/4 lenses. The 14-24 was good in its time, but is now 10 years old and really showing its age next to the othera. As for primes, nothing out there really comes close to the Sigma 14/1.8.
As for the 28 f/1.4, it's up against the Otus, and loses. Not that I would hold it against any lens for losing to an Otus. It also isn't as sharp as the Canon 35mm f/1.4, but is wider. It isn't an easy lens to compare, since no-one else has really targeted the 28mm category, and both 24mm amd 35mm are substantially different in both appearance and application.
Basically, Nikon has some spectacular lenses, but also some glaring holes. Canon's lens lineup is probably more complete, with no real holes where performance is unacceptable for the present time, although the lineup is, on the whole, a bit older than Nikon's (UWAs excepted). Sony is really just getting started, but what they've brought out at the high end has mostly been spectacular, the 70-200 f/2.8 notwithstanding (pity it happens to be a key lens - a weak 180mm macro, for instance, is much more forgivable than a weak 70-200 f/2.

. There's been nothing particularly special about Nikon's lenses over the years - on the whole, comparing Nikon and Canon lenses, whoever has the newer lens will have the better lens at that point in time, although there are exceptions on both sides.