I think it would be ideal if the "Rating grade for" and "Whole forum grade for" labels were only appended to a forum activity grade item if the forum activity is configured to use both whole forum grading and ratings, to distinguish between them. Otherwise, the additional label seems extraneous (especially to a student for whom that distinction is more or less inconsequential).
In a course, create a forum activity with the activity title "1.1 Week 1 Discussion Forum" with the "Ratings" field set to "Sum of ratings".
Navigate to the Grader Report (or gradebook setup) and attempt to locate a grade item called 1.1 Week 1 Discussion Forum. You will find there is no such item, however, there is an item called "Rating grade for 1.1 Discussion Forum".
(same process/result for Whole forum grading)
I would expect to find the activity title in the gradebook unless there is a need to distinguish a rating grade from a whole forum grade.