Different Things That Are all The Same
This section of Leviticus is a series of seemingly disparate commands and laws and comments.
But they all have one thing in common—they are about holy living.
Holiness is about being set apart for the Lord:
19:1 And the Lord spoke to Moses, saying, 2 “Speak to all the congregation of the people of Israel and say to them, You shall be holy, for I the Lord your God am holy.” [Leviticus 19:1-2.]
So, the behaviors and practices that are listed subsequently are about:
Standing out from Egyptian culture (from which they were rescued);
Or not imitating Canaanite culture (to which they are going);
Or just behaving with the light and life of the Lord.