You had two players who put up seasons that were not expected while McDavid's was expected. After that, there are no more notable outliers than there were in the previous two seasons.
88/89 seems like the best comparable. Yzerman hits a level that he never reached before or gets close to again. Bernie Nichols has one of the all-time spike seasons in NHL history (with an assist from Wayne).
At this juncture, MacKinnon seems to have placed himself in the Trottier/Sakic/Yzerman tier. Kucherov is there among the Top 30/40 tier level player too.
We are seeing an unusual drop in overall sv % that isn't attributed to a rise in PP opportunities:
NHL League Averages | Hockey-Reference.com
The question is whether this has opened the door to unexpected/outlier seasons, seasons that statistically are among the best non Big 4 seasons all-time, by non-generational level talent or was this a one off season like Yzerman's 88/89 that just happened twice in the same year.
The difference between 23/24 and 88/89 was that Yzerman was still significantly behind peak Mario and behind prime, but post-peak, Wayne while Kucherov and MacKinnon were in peak McDavid territory.