Another beautician examined my hair and said that my hair is "normal porosity, fine, and thick (a lot of fine hair)."
She said that even when my hair completely dry, I would know if it was highly porous: it would feel mushy. My hair gets tangled easily, but thinking about it, it's because I have "a lot" of fine hair. I do benefit from protein treatments, but without them my hair is highly porous. Also, when my hair is stripped of oils (added and the sebum), it is still smooth when I slide my thumb and forefinger up shedded strands, and it floats for days. Also, water at first goes straight through my hair before it gets completely soaked, about 20 seconds.