I was born a curly and always had hair that expanded. From what I know I had softer hair until puberty hit which is when it started getting more coarse and thicker.
3a/b medium/coarse but mostly moderately coarse, dense, strong strands
Komaza analysis current: medium to thick/ strands(mostly coarse), very strong elasticity, low porosity, healthy strong hair
Goosefootprints: moderately coarse with some medium; low porosity at roots, normal thru shaft, porous ends, normal elasticity