SEMRush has a very practical tool for copywriter brief. You enter the article's main target topic and this tool reviews the top ranking pages and collects the semantically related words, backlinks, text length and a few other metrics in one report. You can also export the results in a document file and send it to the copywriter.

This speeds up the briefing process a lot for me. I could do these tasks with Ahrefs but this SEMRush tool does it in one go.