I would say you're a NW4. Your hair loss is aggressive. I still can't say how soon you will go bald, or even if you will go "completely bald", but regardless of that I would start treatment ASAP.
What are your pics before you started puberty? Norwood scale might not apply to you. Id say you are a NW4.5/5 and NW4 at 17.
I guess your hair loss appears to be fully frontal.
NW3.5 I’d say, in the other pics you look like textbook NW3 imo, at least from the front (maybe the temple recession didn’t stretch as far back though).