"Parallel levels" is a nice way to put it. On a daw or drum machine, you have some sequence of notes or drum hits, that's one layer. And then you apply, say, 50% swing, that's another layer.

The "petri net" or "rhythm necklace" can compact this into a single layer of information. I think something similar can be achieved by using compound meter -- 12/8 instead of "4/4 with swung 1/8th notes" in standard notation, or using something other than the standard 16 steps on a drum machine.

My brain has always struggled with compound meter, somehow I just see a fraction should just be reduced. Much easier for me to imagine a grid that needs different levels of resolution in order to describe certain patterns.

Trying to learn independently, I've found much more difficulty in articulating why a given rhythm is so good, compared to the wealth of theory for understanding great melodies and harmonies.

So it's great to see others building tools and ideas around rhythm, it's a very deep and fun topic to explore.