Maybe something like Comparison, but you have to understand everything can be changed. So, Just because you have KDE, doesn't mean you have to stick with Dolphin for files management, etc. Window managers are even more free form. You don't get a file manager, or image viewer, or text editor. You get a window manager. You can use whatever you want to install though. You also have floating vs tiled windows.

You might just look through screenshots in Google Images and see what looks good to you and then install that.