What's the device code (platform string) for iPhone XS, iPhone XR and iPhone XS Max?

Here is a list of platform strings and corresponding model names:

1. iPhone11,2 = iPhone XS
2. iPhone11,4 = iPhone XS Max (Global)
3. iPhone11,6 = iPhone XS Max (China)
4. iPhone11,8 = iPhone XR

There are two variants of the iPhone XS Max as mentioned here.

I found following across the developer references:

XR = iPhone11,8

XS = iPhone11,2

XS Max = iPhone11,4

Note: I will update these when actual devices are out.