The person at lounge are also not aware for most of the card. Once you give your card they will swipe and check. They mostly market priority pass . But there are many cards which are accepted. As per visa , all visa signature and infinite variant are accepted but it depends on the issuing bank whether they have activated the benefits on the card.
To my knowledge till 26may ,2022. Small list of acceptable card:
1. Priority Pass
2. diners card
3.Sbi credit card and debit card on visa network
4. BOB credit card
5. Idfc debit card
6. Axis priority and burgandy debit card
7. Amex cards
8. Rs 750 by cash is also acceptable for access.
Provide all the cards should have lounge access benefit.