Is there an official DEFINITION of ‘essential business’? ...not just a list,that is just arbitrary opinion.
Ask each business owner if they believe their business is essential to them? ...we all know the answer. So it’s just opinion, those in power just don’t see it as essential TO THEM.
The federal guidance for states is here:
https://www.cisa.gov/identifying-critical-infrastructure-during-covid-19
It is more about what is defined as essential to the federal govt than what is non-essential, which is left up to the state or local govt.