Max has enough time to hit a couple of peaks. I've never seen man and machine so perfectly entwined. He is somewhere very special now. As Racingfan10 said above, age is his ally - this isn't the raw genius of Hamilton at a similar age, this is the advantages of genius, youth and hard-earned experience together. He's like Dylan writing "It's Alright, Ma" at 23 and everybody else going, I didn't even realise such a a thing was possible. Given the right circumstances he could falter though, and from that a different creature would emerge. He's nothing like Vettel though, Their track records have only a passing similarity. Peak Vettel (13) was a site to behold but there was always a question of fragility and worth because it came so quickly and with such up and down performances, too many caveats. And so was proved to be unfortunately, because he was a genuinely exciting racer.
Alonso's peak was Ferrari, just relentless, but Ferrari break even the best. every driver leaves a shell of their former self.
Hamilton is tricky. I couldn't name a season, rather the period of one, the back end, with all to play for, that's when we see the best of him, regardless of year ('07 excepted).
Schumacher. He was also utterly relentless, so who knows which season. All of them maybe. Every race like a goddamn shark in bloodied waters. Forced to pick, then twin peaks, 97 and '06.
Prost 86. If he hadn't have come up against Senna the you could probably just say the '80s.
Senna. Late '80s, early '90s. You either have Senna in a dominant car railroading the field or Senna in a declining car almost railroading the field.