You’ll find sw-dvd9-win-server-std-core-2019 in:

New-VM -Name "DC01" -MemoryStartupBytes 4GB -BootDevice VHD -VHDPath "C:\VMs\DC01\DC01.vhdx" -Path "C:\VMs\" -Generation 2 Add-VMNetworkAdapter -VMName DC01 -SwitchName "ExternalSwitch"