Beautiful collection! I love calatheas and have a bunch as well. The semi hydro setup is also smart since they do love their moisture.
The unfortunate part about having them though is that spider mites loooove them too and it’s a battle getting them under control sometimes.
Definitely already looking better! Plants are super resilient!
I also recently got a half dead orchid at a plant swap that I am nursing back to health. It has one leaf left and one baby one coming in. Had to cut off so many bad roots but it looks like it’s bouncing back.