Assuming you're talking about the sample tabaxi names in Volo's guide - I, in fact, recognized several of them.. They're the English translations of Aztec deity names - "Smoking Mirror" is Tezcatlipoca, and "Skirt of Snakes" is Coatlicue. So I'd recommend looking Mesoamerican-ward for inspirations.I know that the Aztec calendar referred to dates by comparing the two rotating calendar systems, so a particular person's "day sign" might be something like "Two Rabbit" or "Seven Knife". And I'm pretty sure (not an expert) that some people used their day sign as a name on some occasions. I think that's what the "complex formula" Volo mentions is referencing.
If you just want to steal an Aztec god name for yourself, my favorite was always "Obsidian Butterfly" - an Aztec goddess that's so obviously a vampire that Laurell K. Hamilton got an entire book out of that premise.
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