The next iteration changed the structure from vertical to horizontal bands to investigate how this affects perception, and the diagonals also break the bands and create the illusion that the horizontal lines have a inclination, more so when you lower the angle they disappear.
A nice case study for a generative design. After creating a first version, I wanted to drop it on fxhash almost immediately because of the resulting outputs with just a few new rules, but I didn't, I decided to work more on it.
Grouping the colours into groups of 3, 4, 5 or 6 in each vertical band gives more visual similarity, if you want bigger segments you have to tweak it a bit more.
If the curators are right and the colours "are unmodulated, with no discernible pattern in their organization", I can build a random generator with a similar visual result, and yes in some way it is similar.