Do you think those miners Will boldly step out to reveal their identity and put their privacy at risk? The Bitcoin network is mostly about anonymity and optimum privacy. so I see no reason why any person who knows a person that was into Bitcoin mining during early times of the likes of 2020 should disclose such crucial info.

Incase you don't know , block rewards at that time was massive compared to now therefore miners dat sill hodl from that period are  theoretically whales and disclosing themselves puts them at great risk.

Besides what are you looking to do with such information?