I'd be curious to hear more about "symbolic representational language" and how that might work.
There’s probably an existing piece of anthropological jargon that I’m blanking on but a couple examples would be plant symbolism (e.g. white lilies = purity) or symbolism in Renaissance art (e.g. pomegranates signifying the Fall). Systems of communication that aren’t language based, images with commonly agreed upon meanings. So when you look at a piece of alchemic art you know everything in that picture was chosen to communicate something specific. But because they’re images, there’s more room for ambiguity and interpretation than there is in language. It’s something that really appeals to me.