Ok, great! So in this case, you could either:
A. wait for the people-type custom field to be supported in (Universal) Reporting & project Dashboard (which might be soon or perhaps a few months!)
B. create a new single-select (or multi-select) custom field with all the names of the sponsors as options and then migrate these from the people-type field. You can refer to this helpful video by @Bastien_Siebman here: 🎥 How to migrate tasks from one custom field to another ?
Personally, I would go for B as long you don’t have tons of tasks to migrate!
Hope this helps 