There's still (at least) 4 left. We haven't seen at least 3 of the numbers from the silhouettes and one of them actually looked semi decent (very humanlike):
Like out of the 4 visible in this picture, we've only seen the shortest one this chapter. The other 3 (with faces) are still hidden designs.
Not to mention, we don't know if the Numbers have devil fruits. Its still possible.