I've looked through jamfnation and the answer has always seemed to be ARD kickstart to enable Screen Sharing. That no longer seems to be viable moving forward starting with 10.14:
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -off -restart -agent -privs -all -allowAccessFor -allUsers
Starting...
Warning: macos 10.14 and later only allows control if Screen Sharing is enabled through System Preferences.
I'm not seeing anything about it here either:
https://developer.apple.com/enterprise/documentation/Configuration-Profile-Reference.pdf
Am I missing something or is there no way to enable/disable Screen Sharing in 10.14 without having to physically click around on the computer?