Well, aside from amorphous, there are cubes, octahedra, tetrahedra, pyramid and t-grains to mention a few. Each has advantages and disadvantages, but I'm not sure I am the person to describe these fully.

T-Grains offer high speed, finer grain and better sharpness in many cases. Cubes offer similar advantages, especially fine cubes in print films. A mix of these two are uesd in the new Ektar 100 according to Kodak literature.

Then there are thick and thin T-Grains. Well, you get the picture.

Entire textbooks could be written on these subjects alone. And then you get into the epitaxial crystals and the different halide ratios and the field expands from there.

So, to answer you, we saw this in Ektar 100 so the answer is yes. We were on the brink of something. OTOH, the yield was getting slower per unit of money spent, so we knew that the well was going dry. By some estimates, we might have had that 25,000 speed film by now or maybe higher. IDK. I'm sure we would have had a better Kodachrome. JK.