There is a ratings scale for hair texture that exists to help natural girls navigate the wide wide world of hair products. I have included the types with pictures. I hope this helps.
Type 1 is straight hair. Type 2 is wavy hair. No need to include these.
Type 3b hair is very diverse with many subcategories. This is the realm of mixed-girl hair. Or for those of you with "Indian" in your family.
Type 4 and its subcategories are kinky/afro type hair.
Now most of us are somewhere in between these categories, or in my case a mixture of about two or three. Most hair care products for natural hair use this guide. I hope this helps.