Lapse Rates and Cumulus Types
The ELR and depth of unstable layer modulates the type of Cu.
As depth increases, the vertical extent of Cu generally increases.
As temp difference between the air parcel and the environment increases, the updraft speed and severity of Cb typically increase.
Ahrens, Meteorology Today 5th Ed.
This diagram shows that vertical extend of cumulus cloud depend of depth of conditional instability.
Deeper the unstable layer, deeper the cloud.