@morgancouch - Yes, that can happen too. Not sure if by regular DS account you mean an external account not tied to your enterprise account. That is a user that is using their corporate email address on a account that is not part of the accounts in your domain. You can run a report for that.
Are you using Organization Administration to manage your accounts? They could add their corporate email account to the Dev external account if you have not Prevented unmanaged signups.
Each scenario is a little different, so it’s important to know all the details.
Welcome to the DocuSign Community! Your feedback is highly valued. If you find my response helpful, please give it a "Like" and consider marking it as the "Best Answer" to assist others with similar issues.