Customizing Email notifications for timecard transactions

We have a requirement where we need to send customized email notifications for the below timecard transactions:

1. If a timecard is submitted by employee, a custom email notification should be triggered to manager.
2. If a timecard is approved, a custom email notification should be triggered to employee.
3. If a timecard is rejected, a custom email notification should be triggered to employee.

Can someone confirm which seeded workflow notification report needs to be customized for the above scenarios?

I can see 2 seeded reports named ApprovalEmailNotification and TimecardApprovalNotificationReport under /SharedFolders/HumanCapitalManagement/Workflow Notifications.

I believe ApprovalEmailNotification is something that would be generic and used across modules but when I look at the seeded template used, I can see that the content is all for Time card Approval.