I know about haveibeenpwned website
but this website is not showing each individual email address that was pwned, just websites with leaks and dates.
Knowing who is behind open.ai I would
never use their tool for anything nor would I ever trust them

I think you are missing something basic here - Most data on that site is all pulled from public pastebin dumps by hackers -
115,766 pastes
228,881,584 paste accounts
Also, whoever owns it obviously has all the emails, not to mention the other sites out there aggregating similar data like this.