In QuickBooks Online (QBO), the paycheck list is sorted out by last name and first name of the employee. You can check it by going through your employee's paycheck list. Let me show you how in your QBO.
Go to the Workers menu.
Select the Employees tab.
Choose your employee name.
Select the Paycheck list tab.
Additionally, I've added some of our great resources that you can use for reference. These articles provide detailed information on how you can print and invite your employees to view their pay stubs: