Lynne Kelly touches on something like this in her book, they’re called Lukasas.
Here’s a link to a discussion on it on her webpage, and she had the 2 she created in Memory Craft.
Just typing it into the searchbar gives this dicussion thread on it too, hopefully this is of some interest!
Edit: Apologies, I didn’t scroll down enough to see that you had replied to the thread I linked itself! Sorry for being redundant 