As far as their prominence in the offense for receiving targets, this seems reasonable:
Diggs
Davis
Kincaid
Knox / Sherfield / Harty / Shakir = all mixed in
Shorter / Isabella / Shavers = would need to unseat Shakir's active gameday spot as WR5
As of now, I'd see Sherfield as WR3 but likely 5th in actual receiving targets.
I guess Sherfield could play his way into being above Knox and splitting slot time with Kincaid in 3 Wide sets