So I was looking back through the scene where Shallan and gang is hunting the Midnight Essence and they come across that room covered in art, and I noticed something.
Shallan says there are murals that depict 10 kinds of spren and guesses they're for each Order. There's just one small issue. There's 12 Radiant spren. The Bondsmiths have 3 unique spren.
The passage in question with the relevant portion bolded.
Gorgeous, intricate pictures of the Heralds---made of thousands of tiles---adorned the ceiling, each in a circular panel.
The art on the walls was more enigmatic. A solitary figure hovering above the ground before a large blue disc, arms stretched to the side as if to embrace it. Depictions of the Almighty in his traditional form as a cloud bursting with energy and light. A woman in the shape of a tree, hands spreading toward the sky and becoming branches. Who would have thought to find pagan symbols in the home of the Knights Radiant?
Other murals depicted shapes that reminded her of Pattern, windspren...ten kinds of spren. One for each order?
So what do y'all think? Is there a representation of just one of the Bondsmith spren? Is it an abstract representstion of the idea of a Bondsmith spren? Is this a writing error and there was supposed to be 9, with the glowing cloud, tree woman, and figure in front of a circle intended to be the Bondsmith spren? Perhaps the Bondsmiths were supposed to be unrepresented?
If you were to see this picture, the painting of the three spren to make bondsmiths were made to make it visually clear they're the same kind of spren--and they KIND OF are.
The three you note above are not depicting the three spren of the Bondsmiths. One is depicting a perpendicularity, and the other two depicting Honor and Cultivation. These aren't the bondsmith spren, but distinct and separate pieces of art.