Fascinating. Multiple different DNA based instruction set architectures.

https://en.wikipedia.org/wiki/Human_mitochondrial_genetics

Genetic Code Variants

For most organisms the "stop codons" are "UAA", "UAG", and "UGA". In vertebrate mitochondria "AGA" and "AGG" are also stop codons, but not "UGA", which codes for tryptophan instead. "AUA" codes for isoleucine in most organisms but for methionine in vertebrate mitochondrial mRNA.

wikipedia cites to https://www.ncbi.nlm.nih.gov/Taxonomy/Utils/wprintgc.cgi?