This person is an editor.
The person who writes editorials is called an editorial writer or an editorialist. Editorial writers express their opinions on current events, political issues, or other relevant topics in newspapers, magazines, or online publications.
One who writes or presents editorials
Testator.
The person who writes a check is called the payor. Or in the case of my brother, a sucker, when he writes another check for his girlfriend.
An author.
a publisist a bigraphy
composer
a playwright
This is a poet
A person who writes newspaper articles is called a journalist or a reporter.
Editorials are typically written by the editorial board of a newspaper, which consists of senior editors and opinion writers. They write editorials to express the publication's official stance on a particular issue. Editorials get published in the newspaper after undergoing a review process by the editorial board to ensure they align with the newspaper's values and standards.
A person who writes newspaper articles is called a journalist or a reporter.
A Librettist