What third party software are some streamers using to reveal this stats mentioned above in the spectator cam?

Made a real Glitchpop Dagger using high-carbon steel for a good friend's birthday. I hope you guys enjoy or appreciate it! Thanks. https://i.imgur.com/6MMO5h4.jpg

I'm a breach main, and my understanding is that I'm supposed to flash my team in and clear corners with my aftershock. In a game I was playing recently I flashed and told my teammates to push, as I normally do, then my teams phoenix died, I...