u/Altruistic-Bag1882

This is our dog and I am wondering if he could be a black mouth cur. He is a rescue so we aren't sure about his parents. A sibling had a genetic test that said ~50% different pit breeds, and the rest was german shepherd and a few other, but I have heard this breed doesn't come up in those types of genetic tests due to not being in any of their databases. What do you all think, does he look like one?