KBS's Born to Be comeback stage was the best stage for a live performance. Mnet gave them fans for the dance break, but I think KBS's camera work and the crowd were better.
They have Weekly Idol episodes. A couple of Mnet variety shows. They did KBS idol human theater. They have a show called ITZY Codename CSI on their YouTube channel.
This one was pretty good.
https://www.youtube.com/watch?v=j_xf3k8jaK4&pp=ygUOaXR6eSBpbnRlcnZpZXc%3D
And this one was funny to me.
https://www.youtube.com/watch?v=d1BX649PnVg&pp=ygUMaXR6eSBoZWxsbzgy