You can use the WRKUSRPRF USRPRF(*ALL) and see all the profiles you are authorized to. As long as you set up the information about the actual user of the profile, you will only be guessing. Another issue could be a shared profile like we have. We have separate profiles for test and production development used by multiple users at the same time. This is done because it is easier to manage the one profile than 20 different ones.