It's not tricky. Someone owns it.
I realize this sounds tongue in cheek but a PE firm trying to get around ownership disclosure requirements can do something just as easily, both with public and private companies.
Indie app A, owned by a developer, Joe. Company B buys A outright, including employing Joe. They keep the brand around for name recognition.
How does the app store know this? None of this has to be public info if A & B aren't public. The company registration hasn't changed. At best, maybe the bank account number changed.