I'm not sure of the connection you are trying to make.
Hunters Icloud was supposedly hacked.
there is evidence of data that could have come from 46 different devices.
https://www.westernjournal.com/hunter-bidens-icloud-account-cracked-holds-data-46-different-devices-interacted-report/ I have no idea how it works on an Iphone or Ipad...maybe someone can jump in and verify what we are seeing.
here's a photo of his message contacts. Specifically a message from Joe Biden in Jan 2019 that looks like a group that Hunter named "Pedo Peter,Maisy Biden...
On my android, I can name my contacts anything I want. I'm guessing it's the same for the Iphone\Ipad.