Search notes:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\nnn\ConfigurationState

This registry key contains values such as

sql_shared_mr (which is somehow related to R)
sql_shared_mpy (which is somehow related to Python)
sql_shared_aa
SQL_DQ_CLIENT_Full
CommonFiles
CommonFiles_Loc
SQL_ENGINE_CORE_CNS
SQL_PowerShell_Engine_CNS
SQL_WRITER
SQL_DTS_Full
MDSCoreFeature

See also

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\140\UpgradeIncompleteState

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\nnn