Guess my first name by a these hints!

My name is male. My full first name is quite common, but my name for short, what I go by, Is a more uncommon one. My name is of Greek origin. My shortened name starts with a rarer letter. My shortened name is no longer than 10 letters, and no shorter than 4. My shortened name is often misspelled, but only by one letter, which is 2 letters away from the actual letter in the alphabet. It is estimated that over 30,000 people in the U.S. share my shortened name.

What Is my name?