We can create categories for the laws that were given in regard to the conduct of the King, the High Priest, judges, men, women, children, or in regard to sexual immorality, ritual purity, offerings, feasts, tithing, the Temple service, those living in the land, those who are strangers living among them, and so forth. The subcategories are for our benefit to help us conceptualize God's laws and there is no rule about how many or which categorized we should use. We could categorize God's laws based on which book of the Bible they are found in and there is no rule against doing that, but just because we there is a way of categorizing God's laws that makes sense to us doesn't mean that the authors of the Bible categorized God's laws in the same way.
Some people think that just the Ten Commandments are the moral law while other people include others laws are being part of the moral law. Some people consider the Sabbath to be a moral law while others consider it to be ceremonial law. So, yes, everyone has their own list of which laws they think are part of the moral law that is most likely different from others.
Indeed, those subcategories create confusion, which is one of the reasons why I object to them.