Cumulonimbus.
nimbus
Cumulonimbus clouds are clouds that produce lightning.
cumulus cloud
Stratus
A "Nimbus Cloud" is a cloud that produces precipitation. Most likely a Hail or Snow Cloud.
A funnel-shaped cloud is typically associated with a tornado, which is a violent rotating column of air that extends from a thunderstorm to the ground. Tornadoes can cause significant damage and are characterized by their distinctive funnel cloud shape.
Any cloud, including clumlus.
Tornadoes are produced from thunderstorms.
nimbus
cirrus
CIRRUS
That would be a stratus cloud.