Kentrosaurus aethiopicus (Henning, 1915, Late Jurassic 4.5m) is a smaller stegosaur with spines, not plates from East Africa. Note the robust, but short forelimbs here elevated in a bipedal pose.

Stegosaurus stenops (Marsh 1877, 1887, Late Jurassic, 7m). Is a much larger and later sister to Scutellosaurus with a relatively smaller skull, a taller, more compressed torso, deeper tail, and larger plates and spikes. The premaxilla is toothless. The girdles and limbs are more robust. The ilium curves dorsolaterally. The tibia is much shorter than the femur. Interesting stegosaur pdf here.

Iasberrysaura mollensis (Salgado et al. 2017; Middle Jurassic) was originally considered a basal neornithischian, here it nests with Stegosaurus. Iasberrysaura retains premaxillary teeth an antorbital fenestra and a relatively large head compared to its post-crania.