How are the App Tracking Transparency fields determined?

According to the WWDC video about Privacy, it says that when submitting an app to the App Store, you will need to fill out a questionnaire to determine the fields that get shown in "Data Linked to You" and "Data Used to Track You". As an SDK developer, I want to know ahead of time which fields my SDK will need to announce in the App Tracking Transparency section so I could notify our integrators.

What is the best way to figure out this information for our SDK? Is there a questionnaire provided by Apple I can fill out to see what fields will be listed? Can I contact Apple directly to find out this information?

There are a few different ways to integrate our SDK with different features, so it would be great to determine this for each of the integration modules. Thank you!
Any updates on how to find more information about the "nutrition label" in the App Store?
How are the App Tracking Transparency fields determined?
 
 
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