What is the best way to provide proof to an audit person who needs to know all the root/sudo users for a RHEL 6 server?

(I am new at this company, and don't have access to all their resources)

We can provide the /etc/passwd & /etc/sudoers file (the auditor may not know how to read these files)

We also have the RedHat Identity Management running here, but I am not familiar with this tool.

Any suggestions would be appreciated.

Thanks!