The tutorials are same due to how elastic effect works. And hidden interconnections between skills in training.
You usually start 1v1f on guards because you want them to shoot and build up DR + HA because they give elastic to JR, JS, OD, PA and each other. And during training you also train IS and JS which build elastics even further. So then when tehy get older you mitigate age penalty with elastic bosst.
Similarly with HA on bigs, builds elastic for PA and reduces number of turnovers. But bigs have penalty on HA training due to height. Thats why you start with it, because you mitigate this penalty with age. And when they get older you mitigate age penalty with height boost for inside skills.
PA can be a finisher for bigs, since it doesn't get penalised with height.
It's not really people are copycats, but there are many hidden systems, which havent been changed for years so it's really well optimised