After the Queen? A Pawn is worth one, it advances down the board to promote: 1+9=10, then you double that cos this Queen is more dangerous in the ending: 10+10=20, and you add another 6 cos it often Mates: 20+6=26. Round that out and you get 30, followed closely by the Queen(9).
To me, it is THE PAWN!!!!!!!
In my game where 1 pawn decided everything
My head says the rook but my heart says the knight.