Depends on elo. But overall historically, Ana is the most played hero in Overwatch. In OW1 she was always among the top PRs at all elos regardless of meta, and Blizz confirmed a while back that she’s been the most played hero in OW2 as well.
Rein’s probably not played a lot because he’s not very good right now, but he’s always been one of the games most popular tank heroes.
I think the last time I saw a lot of rein was in the beta lol
They added ram who’s just easier to play and queen who’s significantly more fun for a lot of people if you want brawl tanks
Dps boosted Tracer players
Support boosted Mercy players
Tank boosted Sigma players with a hint of Doomfist/ Hog