Just stumbled across this post.

EXO albums and songs sales
EXO, the trailblazers of the K-pop industry in the mid-2010s, have hit 35 million equivalent album sales. Here's a breakdown of their sales.
chartmasters.org
More or less, accurate.
And streaming data too.

EXO's Spotify and YouTube statistics detailed
The most streamed songs from EXO are Love Shot, Monster, Ko Ko Bop and Call Me Baby, in this order. Check out the full list.
chartmasters.org
Suit yourself. Just wanted to see the numbers. Pretty good.