Would you not say Locatelli is more in the Iniesta type category than Caicedo/Rice
Locatelli can play both nr.6 and yes the Iniesta role. But clearly Locatelli is not the specific Iniesta type of nr.8 role, the LCM role.
Locatelli is been using as a nr.6 at Juventus because Rabiot is more a natural LCM and box to box player.
There some types of LCM role. One right foot like Iniesta. Lighter version like Gundogan and the a left foot LCM like David Silva or Phil Foden.
And when you mentioned Iniesta. It's about the skill on the ball, which Locatelli is clearly better than Rice and Caicedo. Rice and Caicedo is two all round nr.6. While Locatelli has the ball skill, really high. But not on Iniesta ball skill level.
Iniesta is a world class right foot LCM. And since Locatelli doesn't has that top level ball skill like Iniesta. Iniesta is a GOAT as LCM player and it will take decades before a new LCM that will reach Iniesta ball skill level. It is Iniesta close control and in small area. Iniesta is so quick, both in his heads and feets. Iniesta will always get away from opponent players.
So i believe Locatelli will do a good job as LCM too. But United and Ten Hag just bought Mason Mount. And i predict Mount will be most use as a LCM at United. Maybe can see Mount as nr.10 and Bruno on right. If Antony is out of injured or doesn't hit the top level as a RW.
But example of a line up with Mount and Locatelli in 433/451 formation:
Bruno/Eriksen/McTom - Casemiro/Kobbie Mainoo/Locatelli - Mount/Locatelli/Fred
In a 4231 formation:
Antony/Bruno/Sancho - Eriksen/Locatelli - Casemiro/McTom/Fred - Rashford/Garnacho +
CAM/nr.10 : Bruno/Mount
CF options : Martial/Rashford and the new Richarlison look a like boy from Colombia who just sign new contract with United
In short and sum up : Manuel Locatelli has both of Casemiro and Eriksen in him, but he doesn't has the top level/world class level of ball skill like Iniesta. He can do Casemiro role as ball winner and has the Eriksen creative. Combine Casemiro and Eriksen in one then you get Locatelli.
Locatelli is more than a deep laying aggresive ball winner. Mobile and with young legs. Locatelli's ball skills is really high.
Watch Locatelli video clips on youtube closely. Locatelli's ball skills will not show on the stats. You get to watch closely. To see how good he is on the ball.
Locatelli is aggresive and dirty, but still really elegance and really good on the ball.