I'm using Xcode 10.1
and trying to add additional simulators for other iOS versions. From Preferences-> Components successfully download iOS v 9.0
& 10.1
But while adding doesn't appear in the list. Tried by restarting Xcode, Mac and simulator still doesn't show.
After trying all solutions it still won't fix the issue. So the only way is to do:
Uninstalled all 3 versions of Xcode 10.1, 10.3 & 11 beta also deleted all downloaded simulators iOS 10.1, 9.0 from ~/Library/Caches/com.apple.dt.Xcode/Downloads
Then install only Xcode 10.1 and download all required iOS version.