3-bit Walsh permutation/ortho

There are 252 different orthographic projections. They form 63 groups of four, that look similar. They are all shown below. Within such a group, each image has a reflection at the antidiagonal and an image with the same outline.

Some images also have horizontally or vertically mirrored equivalents. And a few have all eight rotations and reflections in the. (These are all in the third section. The former in 24 rectangles and 48 long parallelograms, the latter in 48 hexagons.)