We can find out the users and their personas they have by using the user list feature in Core.

To create a list of Users and their personas:

1. Core > Analysis > Manage Lists > users
2. Select Filters 
3. expand Access and Select Persona Criteria and set it to ex: Has any of these specific ones
4.  Click on + select PErsona
5. Select the persona you would like to see
6. Save