Just got add-on CCs for my wife:
HDFC Diner's Black: She already had a HDFC account, so no KYC. Applied via the app, got it in 3-4 days. Same number, CVV as mine, only the name is different. Also says on the welcome letter that the unlimited global lounge access is on both regular and add-on cards, yet to test it out.
Amex MRCC: My favourite card lol. Full KYC was done, and got the approval today. Will see how it comes out, post delivery.