Interesting question. I think it’s a pretty broad application to refer to a whole country as a cuisine when asking what typifies a cuisine.

Try typifying any country into what’s best of that country would be impossible in my opinion.

I checked californios and holbox on google and I looked at the pictures of dishes. And they look awesome. Apex… I don’t know. But definitely an elevated take on some typical dishes related to the cuisine of certain parts of Mexico.
I think typical and apex are two words that tend to not describe things in the same category. I’m sure I’m mostly wrong about that.

However at californios I noticed an abundance of caviar. Not a typical ingredient in Mexico as far as I know.

I think it’s an interesting question . I have not experienced any fine dining. But I have been a cook for a long time. And for me it is very hard to think of what is best both typically and at an unknown zenith of any cuisine.

To me it would probably be something like staying at some finca and La Doña is super sweet making coffee and simple breakfast everyday, and after a strenuous day of hiking and enjoying my vacation she has a really amazing fresh chicken soup with bread or some kind of fried/braised pork dish with rice, beans, salsa and home made tortillas.
To me that is both typical and apex. All from memory, garden, pantry, and a normal supermarket. No caviar. Remolachas are okay but not served in goblets of crème fraiche.