It depends where you put a calm Hulk at. His high ends are insane like lifting a mountain that was twice the size of the Appalachians. Punching a ship across space that dwarf continents. Punching through a forcefield that Excalibur couldn't dent. His highs while calm puts him above Herald tier. Hell, at his weakest he punched am asteroid twice the size of Earth to dust.
The o my definites are WWH and Wbh.