Amazon ICICI CC - Amazon Spends primarily but is a versatile CC
RBL/IDFC/SBI Fuel CC - Fuel Spends
Continue with Amex for buying Amazon voucher also try getting SBI CB for Amazon voucher and any other spend a no brainier Cashback king.
Apparel / Departmental store - Au Lit continue to use it.
Insurance - Use Amazon Pay Balance a no brainier solution
Get Airtel Axis for Utilities and Swiggy/Zomato/BigBasket etc
Offline : There are many possibilities how about exploring Atlas ?