WikiData is a database-oriented version of Wikipedia intended for categorising relations between concepts.
For example, Google (https://www.wikidata.org/wiki/Q95) is "owned by" XXVI Holdings (https://www.wikidata.org/wiki/Q100292691) since 2017.
XXVI Holdings similarly shows that it is owned by Alphabet Inc (https://www.wikidata.org/wiki/Q20800404), which is owned by a list of people and entities with various different voting rights.
There is also the "Parent Organisation" relation (https://www.wikidata.org/wiki/Property:P749) which links Google to Alphabet directly.
These should all be computer-readable.