I have been spoiled and now I am learning that some publishers want a writer to format their manuscripts according to their guidelines. While this is no real problem, it would be nice if they wanted the same things in their formatting. Also in their writing style. One editor has a thing about contractions. If you use one you must use them in every sentence. If not you must write our each in two words. What does this do but make a writer stop the flow of their prose to see if they are doing things right. Another difference is commas. I'm and only use commas when they're needed to make sense of a sentence. Some editors think each phrase must be set off with a comma. I've been praised for using few and told I was writing a rough draft when I chose not to use them
I've come to a conclusion about commas. The rules we've learned for sprinkling our prose with them are written for the person who reads aloud. I'll admit I'm a rapid reader and commas make me pause and sometimes lose the sense of the sentence. I'm not sure what a writer can do about either thing but to learn each publisher's ideas about what makes their story fit their house. Worrying about the story becomes secondary to figuring out the rules.