The US has stopped collecting who owns its companies, and no one can fill that gap
On 11 August, FinCEN issued a final rule permanently removing the requirement for US companies and US persons to report who owns them. It also confirmed that it will delete records already in the database wherever it believes they belong to a US person. The Washington Post covered it the same day. So the gap is permanent, and the brief federal record of who owns American companies is being erased.