For all those wondering what an Exchange 2019 Setup looks like on Windows Server 2019 Core, here is a snippet of what I did in my lab:
If you look at the setup line, you will notice that there is a switch /InstallWindowsComponents and that is exactly what it is. Instead of copying that very long PowerShell command you can use this switch and setup will do it for you. Pretty neat!!
Happy Installing or Upgrading Exchange 2019.