This team was formed by tabloid and in those days England didn't achieve anything in youth football either. The golden generations who perform well at youth levels generally will do well at senior level too. E.g. Germany, Portugal. U17 WC is a bit of random, given that most of the time the team who win it is the one who have players who developed faster physically over their peers. A quick look at the individual award winners at this level gives you Fabregas, Anderson, Kroos, Donovan, Vela, Iheanacho but the rest are all rubbish players.
A better bet is the u20 world cup. With the exception of golden glove winners, since keepers peak much later, majority of the players who shone went on to do well in their career. A study previously showed that for teams who made it to the QFs and beyond, an average of about 60% in the first team lineup will make it in their career and perform well at a high level. If you looked at the recent u20 world cup, most of these players are already at a big club. Juve, PSG, Madrid etc.
