This is the macro I use to bring back windows
Window: Bring Back.kmmacros (2.3 KB)

It doesn't work all time. For example, if I want to bring the Notes window back this macro would bring Photo Browser instead.
And this macro either do nothing or maybe I'm using it the wrong way
I'm not sure if the word unminimize means "bring window back".
Unminimize a Window.kmmacros (1.9 KB)

Edit: I just found this workaround for Unminimize action