Google’s device activity page used to let me remove devices that I no longer used:
Today it lists 3 iPhones for me. I think they are all actually one device, showing up with two different names — none of them current.
There used to be away to remove these devices, but today I can’t. I am able to Remove Account Access, but not the devices.
I removed access to all devices, then reentered credentials on my phone. So now I know that ‘iPhone” is my phone (phone name is John6s).
I think something is broken somewhere….