A skilled writer can be determined in different categories, such as genre and opinion. If you go to library ask for the titles that suit the things you like and ask for the ones that have gotten the most awards and best ratings. Unfortunately, I can't tell you who is a skilled a writer is because it can also be clash of opinion, especially since you're asking on the internet.
Any professional writer employed by someone to write for him using his name and not the original writers name.
a scribe is a professional writer
A professional writer writes quality books or stories or plays.
Professional Adventure Writer was created in 1986.
A scribe was a professional writer in ancient civilizations; and "scribe" was their real professional name. There must have been many thousands of them over the centuries; their names have in most cases not survived.
a nom de plume is a false name or a name under which a writer writes in order to maintain anonymity.
The writer conveys an informative and professional tone.
He was an actor, writer and businessman. Yes he was a professional writer: he did it for the money.
an author
To be a professional writer, you have to produce books or stories or plays consistently and with good quality.
Colin Armstrong is the real name of author Chris Ryan. Before becoming a professional writer, he was a British Special Forces operative.
Scribes