I've never met my mom's dad, but my dad is very hairy, and for the most part I take after him.
Right now (3.5 months) I've definitely gotten thicker hair, but since I'm blonde, a lot of my leg hair isn't visible at all. The leg/arm/face hair especially isn't visible since it's a white blonde. You've got to be somewhat close to see it on my legs, and it's nearly invisible on my arms and face unless you're really REALLY close. I also finally have some happy trail hairs coming in that are (sorry if this is a little tmi) closer to the color of my pubes, which are closer to brown than blonde. I don't know if my leg hairs will eventually turn that color or not, but I've got several hairs by my belly button that are growing in that color now. I, along with my other transguy friend, both have ONE single black hair on our chest by the nipple. I'm 3.5 months with a hairy family, he's 13 months with a very bare family. Mine showed up early on, I don't know about his. I don't know what's with it because it is just one hair, and no others seem to be growing anytime soon.
I just want my hair to grow in XD As a short baby-faced guy I get teased enough for looking young, I want something manly to boast about!