I'd personally add one - if you're an early enough employee, you can have a hand in personally shaping the culture of the company around you. I suppose this can fit into "work a certain way".
It's fulfilling to do that, but all successful startups go through a phase where they become more professional and hire a lot of experienced leaders. The culture the 'old' team worked to create very quickly gets diluted and replaced. Not necessarily for worse, or for bad reasons, but it's a reality that a lot of early employees find challenging.