Even Rooney played CM a few times, with Kagawa at AM (The title clincher vs Villa comes to mind).
Carrick was immense that season and we could trust him to play in a 2. Pogba has simply not consistently performed in a midfield 2 for us so then you're left with the others on your list.
Furthermore, really, it's down to balance rather than simply names to pick from. Rashford, Greenwood, Martial, Sancho have nowhere near the amount of defensive responsibility and discipline as Tony V and Ashley Young, when played on the wing, for example.
We looked absolutely exposed against Wolves in the middle of the park. Bruno and Pogba were waiting ahead of the ball most of the time, and Fred simply can't build attacks like Carrick could. He needs protection, in the form of McTominay. You play McFred and Bruno as the three and there's only three places left available for Ronaldo, Cavani, Greenwood, Rashford, Sancho, Lingard, Martial, Mata, Amad, with James now on the way out. The squad is criminally unbalanced...and I haven't even mentioned VDB because clearly he isn't trusted. Would have been nice to put some of that money towards a Central Midfielder capable of breaking up play and building attacks