Yes,
1) Pencilton app, 10k monthly limit.
Note - if you load via OLA Wallet (Ani technology) on Pencilton wallet then you will get 7% Cashback on SBI OLA credit card or 5% Cashback on SBI Cashback credit card.
You can also load via Freecharge wallet on Pencilton wallet but i think its count under normal rewards/cashback.
After load, use Pencilton RuPay card to add money on Amazon wallet directly via Amazon app.
2) Paulpay app, 10k monthly limit, create multiple fake mini kyc accounts.
Note - 1% loading charges but got 5% cashback on SBI Cashback credit card, 6% on Axis magus credit card, 2% cashback and 1.5% cashback on Axis ACE and Axis Flipkart credit card.
After load, use Paulpay RuPay card to add money on Amazon wallet directly via Amazon app.
3) Muvin app, 10k monthly limit.
Note - Now Amazon gift card option disabled but normal credit card loading 2% charges or Free if you load multiple of Rs100 (I also heard you will get Rs200 amazon gv on 10k spend through child card but personally not verified yet).
After load, use Muvin RuPay card to add money on Amazon wallet directly via Amazon app.