I haven't watched too many variety shows, so some recommendations would be great
I've seen Invincible Youth S1, didn't bother with the second season.
It sucked that Hyuna,Sunny, and Yuri left part way through...But I loved Victoria out of the three who came to replace them.
Heroes was also amazing, but having Nicole leave part way was sad, Nicole was so adorable.
We Got Married is also nice, but I hated the endings, so sad seeing them leave each other
I started watching Running Man not too long ago, starting to get caught up on it, currently at Episode 95, and loved all the episodes before it, sad that Song Joong Ki had to leave around Episode 60 though.