Interesting question/inquiry/line of thought. I wouldn't go as far as to say it is crapola, but I doubt there is much value in trying to stereotype body type with personality type. You could throw into the mix height and get all sorts of variations. For fun, throw in body fat %. Again, I'm not sure that you can draw any conclusions due to the variables. We are all different.
As as an example both of us could be classified as "responsible, brave, well rounded, patient, etc." You referenced that you are "lean, yet muscular". I am stocky with 16% body fat, above average muscular and high level of endurance. Without a direct correlation, our personality types may be similar, but body types are different.
Best of luck in understanding yourself better. Just remember that life is a journey! Right?!?