a professional that simply writes for someone else
a professional who writes what the author/expert would write if he or she had the time, skills, and energy
a writer that will write content for you, this material remains is your own
no byline given for the writer or the byline is given to someone else sometimes a celebrity
person hired by an author to write on his or her behalf-receives no public credit.
A co-writer who helps you write your book and not given credit on their work.
a writer or co-writer who is not credited on the work.