Naming conventions /terminology for different types of users?

Let's start with the most basic example:

an UX company creates a website for a client (user). The website will be ran by a staff (users). This staff is divided in admin/tech staff (users) and content creation (users). Of course, this website is aiming to be seen by as many users as possible.

As you can see, this is an incredibly common situation, just a website with some staffing has many different types of users, let alone complex system configurations.

At first, I thought about ROLES, which is related. But I quickly realized it doesn't cover all cases. Or in any case, a ROLE would be a subset of an user type.

So, my question is: is there a commonly accepted terminology for the different types of users in UX?