And that is indeed a service worth paying for. LSEG data set has decent coverage for businesses outside US and Europe, and they are one of the few who offer fairly reliable UBO ("universal beneficial owner") data on top.

They're not cheap, but comparing to the cost of spending double-digit number of hours trying to find the same information in house - you are quite likely to come out ahead.

For those wondering, UBO research is not unlike investigative journalism.