I checked the option “Require Content approval ” in list setting and then I created a “Publishing Approval ” workflow for adding a item in list . But I was not able to see the added item in approver’s list until the creator approves the item.
When you add a new item or when you modify an existing item in a list or a document library after you enable content approval for that list or document library, the item is marked as Pending. Pending items are only visible to the user who created or modified the item and to users with the Manage Lists right. Pending items are not visible to users until the item is approved.
Read more over here:
Overview of the Content Approval Feature and the Approval Status of Items in a List or in a Document Library Print Print Email Email