Assuming this isn't a joke, find one of the services you can pay to get your data deleted from brokers, and then look at which brokers they delete data from. DeleteMe and Incogni both have lists. https://blog.incogni.com/opt-out-guides/ and https://joindeleteme.com/sites-we-remove-from/

No. It's not a joke. There are many good research projects that we can do that don't need to compromise people's privacy. So we need to find a way to do it in a way that generates useful insights without making someone feel like the target of a stalker.