Simulator runtimes will no longer be posted through the website in future updates.

[SwapnanilDhol]

Feel free to close this issue if this is already addressed but Xcode 16.0 Beta 6 release notes contains this note

The simulator runtimes are available on Apple Developer website, but will no longer be posted through the website in future updates. Please use the xcodebuild -downloadPlatform -exportPath command to download the runtime and then xcodebuild -importPlatform <simruntime.dmg> to install it.

https://developer.apple.com/documentation/xcode-release-notes/xcode-16-release-notes