Technically, there are hundreds of varieties of carrots and all it takes is a quick look at any seed category to quickly realize the full range of carrot possibilities. Interestingly, carrots are categorized by their shapes and colors.
Four of the main types of carrots are:
Imperator carrots are commonly found in the grocery store. These have a heftier look to them, and a higher sugar content than other types.
Nantes are a popular choice for home gardeners. These have a longer and perfectly tapered cylinder shape. Their color is a deeper reddish-orange color.
Chantenay is a hearty carrot that needs to be picked before it is fully grown or else it becomes woody. If harvested when the carrot is still small, it will have a sweet taste and a tender texture.
Danvers have a tapered shape but are shorter in length than many of the others. These do have a deep orange color and and a rich flavor
There are also a variety of both miniature carrots and round carrots.