https://wccftech.com/have-different-apple-ids-for-icloud-and-itunes-apple-one-bundle-supports-that-too/

If you have multiple Apple IDs for iTunes and iCloud and worried that it might not work with Apple One, then relax, it will work just fine.

A lot of people usually have a mix of two Apple IDs in order to access iCloud, Apple Music, iTunes and more. And if you are one of those and wondering whether or not that combo will work with the newly announced Apple One bundles, then you will be pleased to learn that it will.