Summary:
The name of the approvers for a timesheet can be found on the top of the timesheet displayed beside Timesheet Approver. The approval can be for example Project Leader>>Supervisor>>Client approver, where project leader is the first approver, supervisor the second and client approver the last. Their names displayed beside the Timesheet Approver need not necessarily mirror the approval path, however are displayed in the alphabetical order with the Last Name displayed first.

Example:
If Andy Riddick is the Supervisor, Betty White is the Client Approver and Charlie Bartlett is Project Leader, then these names would be arranged as Charlie Bartlett, Andy Riddick, Betty White in the Timesheet Approver line on the top of the timesheet.