[jedimastert]

I'm unaware of how other platforms work, but for Google you can just see what buckets have been associated with your account:

https://myadcenter.google.com/controls

I'm not sure how that would work from an ad-buying perspective, from what I understand you essentially choose which buckets you'd like to show ads to? Like I don't think ad-buyers get the whole dossier for the person they're showing ads to, the platform just decides "from what you've told us, this person seems likely to like your ads"