Often there is water vapor if it's a dormant volcano, and/or sulphurous fumes and hot gasses.. plus toxic farts...
A Strato volcano or a composite volcano.
Any kind of volcano can form after the eruption. If it doesn't erupt and never has then it isn't a volcano.
Tungurahua
It is a Strombolian volcano.
Cleveland volcano is in Alaska & is a Stratovolcano (composite volcano)
the colima volcano is a stratovolcano type
It is a Strato Volcano.
cinder cone volcano
composite volcano
Unzen is a stratovolcano.
Hawaii is a shield volcano.
The Santa Maria volcano is a pyroclastic volcano.