MySQL - List Connections and Users

select name from sys.databases;
 
use db;
 
-- list users in current db
select name as username,
       create_date,
       modify_date,
       type_desc as type,
       authentication_type_desc as authentication_type
from sys.database_principals
where type not in ('A', 'G', 'R', 'X')
      and sid is not null
      and name != 'guest'
order by username;