Apple one Subscription
If you already have a family plan for The cloud, and purchase the Apple one plan. how do you share to the family and stop paying for the old cloud plan?
iPhone 14, iOS 16
To find out what happens to your iCloud storage plan when you sign up for Apple One, read this eponymous article --> What happens to your iCloud storage when you sign up for Apple One - Apple Support
The document describes various scenarios, including ones where you can have two subscriptions going at the same time if you need even more storage.