Cannot get "view as iPhone 8" while in main.storyboard.

I can get the iPhone 8 simulator just fine, and I can test on my iPhone 8.

However, I cannot get the iPhone 8 from the list of choices.
I set the target development to
Catalina 10.15.5.
Xcode: 11.5
iOS (on my phone 13.3.1)

The only things that appear are:

iPad Pro 12.9 (3rd gen)
iPad Pro 11
iPad pro 12.9
iPad Pro 10.5
iPad 10.2 7th gen
iPad 9.7
iPhone 11 Pro max
iPhone 11
iPhone 11 pro
iPhone 8 plus
iPhone SE 2nd
iPhone SE 1st
iPhone 42