The following data will flow into your new device, even if you set it up as a new one and use the same Apple ID that was used to sync data with the iCloud.
iCloud backup doesn’t include information that is synced and stored in iCloud, like Contacts, Calendars, Bookmarks, Mail, Notes, Voice Memos, Messages*, shared photos, iCloud Photos*, Health data, call history, and files you store in iCloud Drive.
*-If you had turned on Messages in iCloud & iCloud Photos, your content is automatically stored in iCloud and is available on all devices that use the same Apple ID