The '21s I've had have generally been crisper and lighter while the '22s have been richer and more concentrated (as others have noted). Not that I've had that much.
But, also, very producer-specific. I've found the '21 Roches Neuve Memoire to be pretty fruit-forward and rich (producer trumping vintage).
I'm assuming '21 was a difficult vintage for Dagueneau because I believe he dumped all his grapes into one cuvee (which I liked -- very fresh and linear, but seems to me to be very un-Dagueneau in style).
In contrast, the '22 Vacheron Sancerre Les Romains seemed rich and tropical.
Very small sample size to make vintage generalizations, but it's what I've got.
Speaking of '23, I really don't know what the vintage is like generally, but the '23 Boudignon Rose was really delicious!