I don't think the technical aspects of a player's development varies much between countries, although the Brazilians probably pursue more flashy techniques. You are on the right track there, BA81.FWIW, I would suggest it’s crucial for any semblance of a curriculum prior to ages 8-10(as I think Mono alluded to earlier) to emphasise developing as high a level of technical-ability w/the feet as possible(this includes strengthening a player’s weak-foot too), and the continued use of small-sided games until graduating to full 11v11.
Upon say, reaching 11yo then I suppose an individual player’s development can probably become a little more laissez-faire and not so slavishly-beholden to a single particular methodology..maybe - or not?
I could be totally wrong either way, but from the outside looking in that’s the vibe I get about it all.
It is the style of play, structure of teams, game based analysis proformas, training ground practice where approaches vary.