Hi,
I’m struggling to find the size classes as shown in the tutorial that is supposed to be here:
As shown here: 
Any help is appreciated. Thanks!
This changed when Xcode 13 was released.
Someone has gone to the trouble of creating a video on how to deal with variations in Xcode 13 (which is the same as Xcode 14 if that is what you are using).
OR this stack overflow thread.