Question: what are the different types of oatmeal?
Answer: Raw oats. Wholegrain raw oats are harvested when the grain is fully-grown and dry. ... 
Whole oat (groat) Groats are what's left when the inedible hard outer hull of the oat grain is removed. ... 
Steel cut oats. ... 
Rolled oats. ... 
Quick oats or instant oats. ... 
Oat flour. ... 
Oat flakes.