Not a bad question Decentric.
I'll throw up some garb in my amateur kind of way.
Am still playing in the old er leagues, ex Prem 1 in my youth days, armchair expert j/k and currently have 2nd son playing U15 RYL.
I think we need to break this into 2 groups - Club and Rep levels.
Club, I would pigeon Div 1 for starters.
A mix with natural talent - some the typical good sound work horse.
Normally coached by a ex Club Rep player - or devotee non player.
Training time 1 to 1.5hrs x 1 a wk maybe 2.
Time is spent more so on fitness first 30mins, some ball work mixed into it, dribbling to staggered cones and back for eg.
Then some small sided games - backs/keeper vs halves/forwards.
Keeper taken aside for some practice with a subbie usually - some discussion with rest of team over last weeks game and onto coming game. Nothing technical enough more so to do with marking out key opponents.
Some shooting practice followed by a half pitch game, at times the fellow Div 2 team training as well or other.
At this level not much if any is spent on 1v1 Defensive and Attacking Skills imo.
Communication is only that that if their is some vocal players in the squad makes it a positive for the team as we know it, squads without a vocal player or 3 are lacking big time in that case and no coach is going to be able to correct this.
Game Sense - again I don't think its talked about enough.
My own youth experiences, when I consider the above I feel lucky that during my time management/coachs I had had the passion/knowledge of the game, taught us what we needed, skills,tackling,postion,reading the game followed by fitness.
Watching from the sidelines my U15 NYL, this again would vary by club resources but where he is currently.
The coach is early 20's, knowledgeable, covers everything in his 2 x 1.5 runs but not comprehensive enough.
Doesn't work them enough with the ball imo.
Also whilst they are doing x drill half the team is waiting doing nothing waiting their turn.
Mind you their results are pretty handy to date but just some of my observations.
Love Football