The OT laws came into lots of categories but i don't try to divide them up, Rather i ask myself what is still relevant. What laws does God want me to keep and obey.
Some say Love is the only law, others say every law, but i say that by prayer and study we can understand which laws have past and which laws are relevant.
The OT has so many laws and i know that some don't apply today because Paul made it clear. Gal_5:6 For in Jesus Christ neither circumcision availeth any thing, nor uncircumcision; but faith which worketh by love.
1Co 7:19 Circumcision is nothing, and uncircumcision is nothing, but the keeping of the commandments of God.
Rom_2:29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
Circumcision was a physical sign for the Jews and we are now Jews spiritually by faith so the outward sign is not needed anymore.
Heb 9:19 For when Moses had spoken every precept to all the people according to the law, he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and sprinkled both the book, and all the people,
Heb 9:20 Saying, This is the blood of the testament which God hath enjoined unto you.
Heb 9:21 Moreover he sprinkled with blood both the tabernacle, and all the vessels of the ministry.
Heb 9:22 And almost all things are by the law purged with blood; and without shedding of blood is no remission.
Heb 9:23 It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.
Heb 9:24 For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us:
Heb 9:25 Nor yet that he should offer himself often, as the high priest entereth into the holy place every year with blood of others;
Heb 9:26 For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
Heb 9:27 And as it is appointed unto men once to die, but after this the judgment:
Heb 9:28 So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
From this i can understand that Christ is the sacrifice. A better offering that enables me to be forgiven so i don't need to offer lambs and Goats. The sanctuary and laws around these are fulfilled in Christ.
Heb 10:1 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect. .....
Heb 10:3 But in those sacrifices there is a remembrance again made of sins every year.
Heb 10:4 For it is not possible that the blood of bulls and of goats should take away sins.
Heb 10:9 Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.
Heb 10:16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
Like circumcision the sacrifices are no longer of any value (they could never take away sin), Jesus is the Sacrifice that we believe in our hearts and minds.
i won't go through each law but i look at the laws like loving council from a loving Father that is protecting us from Sin. Sin = death, and God wants us to be free from the consequences of sin so they are not rules to restrict us but rules to save us.
If you love God you will obey the commandments He gave us.
The laws about diet are a contentious topic and i have heard some of the arguments to say we came eat what we want today. They are weak, because God gave the dietary laws to His people because He love them and wanted them to be healthy people. All my research into the clean food diet vs the unclean meats reveals that God knew what He was talking about when He divided them. It wasn't just an outward symbol, they were healthier for it. If i love my God and value my body i will listen to His wise counsel and only eat the clean foods, so that i can serve my God better.