IMO from the games I saw at Flamengo Paquetá's best role is as the right mezz'ala, just like he did for us in Genoa. Surely he can play in the left mezzala, or as AMC behind one or two forwards, or in a bunch of roles really almost anywhere in midfield and even further forward, but that seems the most comfortable one and the one that makes best use of his strength, work rate and vision.
That doesn't necessarily mean it's the role for which we need him though as we desperately could use more skill, flair and creativity in attack.
These things change anyway. For example we have this image of Kaká playing behind the two attackers (think 2005), which he did in his early years. But Carlo at some points also switched to a flat four during games and Kaká stuck to the right for long passages, and of course later, arguably at his best, he was deployed alongside Seedorf behind only Pippo in the christmas tree (2007).
"It is possible to imagine a distant future in which most other species of life are extinct but the ocean will consist overwhelmingly of immortal jellyfish, a great gelatin consciousness everlasting".