[encody]

I'm a competitor in ballroom dancing which, though it is admittedly quite distinct from ballet, makes use of no such notation. Steps are usually explained like so: https://www.dancecentral.info/ballroom/international-style/s...

There are a lot of learned acronyms (LOD: line-of-dance, HT: heel-toe, OP: outside partner) but not much in the way of custom notation.

I did discover a custom figure linking notation on this website (https://ballroomindex.weebly.com/choreography.html), but I've not seen it used elsewhere.