Now that I’ve read the book again, yes you’re right, the correct name for this grid is the harmonic armature. I vaguely remember it that’s why I only write it as “variation/simplification”.
I’m interested in adding the dynamic symmetry, but the reason I’ve to choose this grid as my go-to grid is that it can be used in any aspect ratio. but I’ll try it as I want to learn a bit about LUA for adding custom grids.