Hi Gaurav,
You can use below in query builder across each environment (DEV,Test,PROD) to get individual lists and then consolidate.
List of All universes
SELECT si_id,si_name,si_webi,si_cuid FROM CI_AppObjects WHERE si_kind = 'Universe'
List of Multi source universes
SELECT si_id,si_name,si_webi,si_cuid FROM CI_AppObjects WHERE si_kind = 'Universe' and SI_DATACONNECTION.SI_TOTAL>1
Thanks
Mallik