Each area of Disney is different. When I was a CM at the Disney Store, we were called CM's and the head manager was the manager. However asst. managers were called "leads" but I believe that has changed now too.
I know in WDW there are CP's (college program), seasonal CMs, part time CM's, and full time CMs. Im not sure but usually the full time possitions are saved for managers.
In WDW, everyone starts at the bottom and their seniority is counted by years of service. Seasonal CMs only have to work 1 day out of every 6 months to keep their status. So it's a good way to get on board and join the team if you live far away like I do. :animwink:
Just don't think you will be making a huge pile of money, lol.