Hes a conqueror
When katakuri isn't restricting himself by putting up mental barriers on what he should be or has to be hes a monster. Like maybe you can argue that pre wci kata was more like the marco/king type but even during the arc he showed potential to be so much more. Even then before wci his family put him on so much of a higher pedestal than any other sibling including the other sweet commanders. Something marco/king dont really get too much of always being compared to characters like jozu (pre marineford) and queen
Like there's a clear difference in the reaction to katakuri and cracker's defeat even
Katakuri was trying to be what he thought his mother and siblings needed to be the best son and brother but at the end of the day he was just stunting his own growth by not being unapologetically him. He didn't even show off his conquerors haki until he took off the scarf and stopped caring what other wanted him to be but what he wanted instead
Now more than ever its time for him to step up and be not what he thinks his family wants him to be but who he wants. With big mom out of the picture and the blackbeard pirates raiding tottoland it really is up to katakuri to take charge and live his life the way he wants. He obviously loves his family but if he stays the way he is hes never going to be as great as he can be. He gave us a glimpse of his true self during his fight with luffy and now he needs to show everyone else what kind of man he truly is
Also side note i dont think its a coincidence snack was a previous sweet commander