The highest category of credit card offered by HDFC Bank is as follows: a) JetPrivilege HDFC Bank World Credit Card - Idea for regular spenders with attractive reward points for flight tickets, vouchers, and premium merchandise b) HDFC Bank Diners Club Premium Credit Card - This card is perfect for frequent travelers who want exclusive lounge access and attractive travel, dining, and leisure rebates. c) HDFC Regalia Credit Card - HDFC Regalia credit card offers premium benefits for individuals with a high-end lifestyle and those who travel frequently.