This is largely data that you have provided to Apple (account information, purchase history, etc) along with a few iCloud logs, and data that you choose to stor

This is largely data that you have provided to Apple (account information, purchase history, etc) along with a few iCloud logs, and data that you choose to store in iCloud. Apple doesn't really do any 'collection' of data. I know this is kinda hard to believe, and goes against pretty much everything their competitors do, but it's the case. TLDR; if you're not actively asking Apple to store data for you, they probably aren't.