The Unmade and the Ghost Bloods

We don't fully understand what exactly they want with this unmade but we know that they are looking for her. They are also trying to capture and or kill the heralds to find a solution to th s problem, to unlock that cognitive shadowness. And we see an interest in the other unmade, jana, who is able to make and unmake the spren. I find ther fascination and interest in the unmade to be of importance and focus, definitelyand we have lots of speculation on what the unmade are.