I am curious, if you ask for a dump of your data from Google, where do you have to look to find your ad category ? As far I know, this is not directly accessible from your profile or privacy settings. Looking at the data selection to export, I am not even sure this is included somewhere.
I have ad personalization turned off, but you should be able to view and edit your interests from your settings page. https://support.google.com/ads/answer/2662856
However I am sure I got an interest profile, at least being used with the Discover feed on Android.