How does discourse count users?

Actually, I have some more follow ups after poking around a bit more:

Is it fair to say that total users (provided in site statistics) = all new + basic + member + regular + leader? I’m looking at all ‘users’ to date.

Also, what is the definition of an ‘active user’ then?

I think this should answer most of your questions

There are a few other faqs as well about this.