You can find a wide variety of whiskey types in the market, but there are two major categories: American and Irish.
American Whiskey is distilled from fermented grain mash with most brands being rye-based or corn-based. The main characteristics you will taste when drinking this whiskey include vanilla, caramel, citrus fruits and oakiness. It has to be aged for at least three years before it becomes available on the consumer markets.
Some examples of popular American whiskeys are
Jack Daniels Tennessee Rye Whiskey
Jim Beam Kentucky Straight Bourbon (Uncut & Unfiltered)
Maker's Mark 46
Woodford Reserve Distiller’s Select