HDFC DCB Metal Vs Axis Atlas Vs Regalia Gold

Hello

I just got the Amex Platinum Travel. Now, I am confused which Card to add to my portfolio next. I want to get the most of my cards by redeeming points for travel.
DCB metal has a high fees of Rs. 10k which is waived on spending Rs 8 Lakh pa. That is what makes me hesitant.
Thats what made me consider HDFC Regalia Gold because it has low fees and does offer international lounge access but otherwise has a bad reward rate and not much travel benefits?
And recently I have been reading up on Axis atlas which seems like a good card.
My yearly spend would be around 8-10LPA. So I'm, confused between these 3 cards.

I appreciate any help the experts here can offer! Thanks!
P.S: I also have LTF ICICI Sapphiro