The Windsor looks nothing like the four-in-hand. It's a symmetric, full knot. The four-in-hand is asymmetric and skinny. I happen to think the Windsor is the best looking knot here:
The Windsor is an attempt to simulate, with a common tie, the look of a knot the late Duke of Windsor was known to wear, which was, in fact, a four-in-hand tied on a much wider (and, I suspect—though I have seen no documentation on this point—differently shaped) piece of material than common ties.
> I've been using it since I was 13. My father taught it to me. His father taught it to him. I've taught it to my son.
I’m not sure what relevance that has; I learned it about the same age, also from my father (who I suspect didn’t learn it from his father, whose personality, age, and socioeconomic background probably would not have inclined him to jump on that particular newfangled fashion trend.)
https://www.ties.com/how-to-tie-a-tie/windsor
(Scroll down to Explore More Knots.)
I've been using it since I was 13. My father taught it to me. His father taught it to him. I've taught it to my son.
I haven't tied the the Pratt knot before, but it looks like it's a nice nearly symmetrical knot that doesn't use up much of the tie.