I already made a forum on this topic.
What is your favorite Variant and why?
Atomic and Chaturaji. I lime chaturaji more than other 4p variants cuz it has a smaller board and isn't so confusing.

I love Unique because of how unique it is. It has simplistic gameplay but deep strategies at the same time. Shame almost nobody plays FFA NCVs these days.
What is your favorite chess.com variant and why?