On a new Windows 2019 Datacenter Core (no UI) image in Azure, these features are installed by default:
PS > Get-WindowsFeature | Where-Object { $_.Installed } | Format-Table -AutoSize
Display Name Name Install State
[X] File and Storage Services FileAndStorage-Services Installed
[X] Storage Services Storage-Services Installed
[X] .NET Framework 4.7 Features NET-Framework-45-Features Installed
[X] .NET Framework 4.7 NET-Framework-45-Core Installed
[X] WCF Services NET-WCF-Services45 Installed
[X] TCP Port Sharing NET-WCF-TCP-PortSharing45 Installed
[X] BitLocker Drive Encryption BitLocker Installed
[X] Enhanced Storage EnhancedStorage Installed
[X] System Data Archiver System-DataArchiver Installed
[X] Windows Defender Antivirus Windows-Defender Installed
[X] Windows PowerShell PowerShellRoot Installed
[X] Windows PowerShell 5.1 PowerShell Installed
[X] WoW64 Support WoW64-Support Installed