Looking for data about company ownership network

I’m looking for a data archive of corporation ownership networks. For example, Alphabet owns Google, … and some metadata like when they are created/owned by Alphabet if possible. I was made aware of OpenCorporates but it doesn’t seem to have such data as far as I tried.

Apologies in advance if this is not an appropriate content for the community. I figured digital archivists may be aware of the existence of such archive. I couldn’t find a specific lemmy community solely for asking about data suggestions. If there’s a community better suited for this post, please let me know.

Thanks!