I’ve been using Grammarly pro for years as a slightly more advanced spell and grammar checker, but I’ve never liked their “rewrite suggestions” since they remove my favorite ways to abuse the English language. It’s really useful because you have control over what things you do want to use in it, but with their push to AI, I am unsure if I will renew my yearly subscription come October. On the other hand, I wonder how much of it is just jumping on the marketing bandwagon… it’s not like it generates text for you, just suggests ways of changing the text you have already written to fit a more general view of what English is supposed to do depending on the “style” you pick.
There might be an option to generate text in there somewhere, I just shut down all things like that on reflex. Might have a look around when I have time.