I find the bow barrel truss very interesting. Its very similar to a flat truss in a lot of respects but then you essentially create pitch breaks at all the panel points and add some camber to it.
View model here:
https://3dwarehouse.sketchup.com/model.html?id=uf39ab29a-4d1b-458f-b9cb-b1bf882b9774
View model here:
https://3dwarehouse.sketchup.com/model.html?id=uf39ab29a-4d1b-458f-b9cb-b1bf882b9774