Bugs happen. I add the fix here when I find one that’s a pain to solve. Because bugs suck and no one wants them.
Unity Script Not Appearing in Add Component List
If you have a script in Unity that does not show up in the drop down list when you tap add component, check if there is a case difference (or spelling difference) between the filename and the script class. A case or spelling difference can cause script to be left out of Add Component list.
iOS Simulators Not Showing Up: Adjust Player Settings
Go to Edit -> Project Settings -> Player -> Other Settings -> Target SDK and set it to Simulator SDK instead of Device SDK.