Adding Approval Process Assignments to Project Reports

Hello! I'm working on creating a report for projects with approval processes. One of the fields I would like to include in the report is who has been assigned to a specific part of the approval process (i.e. editor). I previously had it as a custom form field that had to manually be set (in addition to assigning the approval process steps). However, is there a way to automatically assign this field via calculated fields, or at least automatically display the assignment in a report using text mode? I'm unfamiliar with text mode, so if anyone has any good resources for that, that would also help. Thanks!