This distinction between floor raisers and ceiling raisers is one that I also find useful to make. Neither are monoliths, nor are there clear cut boundaries between the two. Someone like Ancelotti can go back and forth between the two for example, winning the biggest trophies in the game while keeping Everton afloat in between. But most of the time you have a good sense of where the manager in question stands at the spectrum.
Floor raisers excel at making wholes bigger than the sum of its parts. They create compact, hard-nosed, tough to beat teams where most players look close to their best selves. Pochettino was a clear example of that during most of his time here. But even the likes of Moyes, Nuno, Dyche that people often turn their noses up at belong in to this category. Lumping all these guys together might seem counterintuitive or flat out wrong, but like I said there are degrees to it.
Ceiling raisers excel at getting their teams over the line. They admittedly need great amount of resources to do that, that's why they're sometimes called chequebook managers in a condescending tone. They deal with all the hassles that managing a big club entails, including managing big personalities, dealing with media attention and fan expectations and so on. In terms of Xs and Os they know how to build teams that have no problem breaking down low blocks on a consistent basis. As we all know it's not a walk in the park, because we regularly see managers establish themselves as good floor raisers before failing to make that transition.
Ange seems like a wannabe ceiling raiser/chequebook manager, that's why all this talk about him leading a youth project has been ludicrous. Nothing indicates that he has what it takes to be a floor raiser such a project would require. Nor do I think he would even be interested in such a thing, as he has been bouncing around from team to team over the course of his career.
There's no project going on that he's in charge of. He's just enjoying his 15 minutes of fame here, however long it may last.