Can't wait to see more of these guys. I'd drag the cat tree back from the door a little, so the door jamb can act as framing without the distraction of the window. Love their individual expressions and poses, and how they work as a whole. Maybe meter off something in the scene that's a little lighter, and recompose to avoid blowing those pretty whites.
This has potential, but unfortunately is overexsposed. With this nice setup, look at different time of day to use the natural light. With 5 cats to pose like this I hope to see them in a future challenge.
Amazing that you got them to be still on there all at one time. The light on the cats is a little problematic for me. Love the image and it's great for odd.
Lovely photo, you even have the one oddball cat staring out the window.
The harsh lighting has resulted in a few blown hightlights, which is unfortunate, and I think a little more room at the bottom might have helped.