This finals really seems to be displaying the different tiers of tennis players right now. Of course it is a spectrum, but it really seems like we have separation between several groups:
Alcaraz, Sinner, Djokovic
Zverev, Medvedev
Rublev, Ruud, Tsitsipas, Fritz
Dimitrov, De Minaur, Rune, Hurkacz, Berrettini, Khachanov, Shelton, Tiafoe, Paul, Draper, FAA, Fils, Baez, etc
Tsitsipas was formerly in the second group, but has since fallen and seems to be heading for the fourth group. I'd like to put Rune in the third group, but he just hasn't solidified himself there yet. The fourth group is a mixed bag: some guys on the rise (presumably Rune, Shelton, Draper, Fils), some guys who fell back and may or may not rise again (FAA, Berrettini), some guys who have presumably settled in there as being as good as they'll get (Tiafoe? De Minaur?), and some guys who can be really good in certain contexts but aren't quite well-rounded enough to be in the third group (Hurkacz, Khachanov, Baez). Paul is interesting, because he keeps getting better every year, though it is hard to imagine him rising too much further.
I'm not sure Novak still belongs in the first group. I think the AO will tell us a lot.