Having comedy in a film, doesn't not essentially make a film "very comedic". I have a hard time calling Civil War, Infinity War, Endgame or Black Panther that. These are comic book films. Of course they have a very action adventure film feel to all of them. Just like Star Wars and the comics and serials that inspired them, they take on these genre's and blend them together in these romantic tales. A big aspect of that is comedy. Even Nolan had plenty of comedy in his comic book flicks, it was all just a lot more British. It's why I fLedger's Joker incredibly funny.
One thing I have an issue with when it comes to these conversation, is that while there is definitely an overall style to Marvel flicks, what I feel like is focused on is only the comedic aspect. Take Captain Marvel. Does it have comedy in it? Of course. But that is in no way the heart of the story, but to make there overriding connection, it is the only thing focused on. There is no way Thor Ragnarok, feels like either Thor flick that came before or any Marvel movie to that point. Even with Taika's comedic chops. I mean using this general idea presented in these conversation, Jo Jo Rabbit is a typical Marvel movie.
Bringing up horror is actually a really good example of why I think these conversations are off. Sam Raimi, is a horror legend. Arugably the GOAT. He's coming into do Doctor Strange 2. Are people going to be surprised when there is a lot of comedy in Doctor Strange 2, and call it the, "Marvel Style"? Because long before there was a Marvel studio, Raimi was doing horror and comedy together. A decade ago, he showed he still got it.