I am not interested inf writing fiction, but I enjoy writing various types of non-fiction. I like to think that I am passably good at it.
There are two aspects to non-fiction, not necessarily unrelated.
The first is the emotional content. Assuming that you have an interest in what you are writing about, how do you convey that interest while remaining faithful to the facts?
The second aspect, which I confess to finding more interesting, is how to present the information in the clearest possible way. What types of analogies or metaphors are most useful? Is it better to start with a specific example or to start by giving the general principle? I like using not only text but various types of charts and tables to organize information.
My profession is computer programming. They don’t give out Pulitzers for software, but there is something of an art to not only getting a program to do what it is supposed to do, but in making the code sufficiently readable that someone else who picks it up can quickly get a good overview of what the code does. and navigate to the appropriate place in the code to find a particular functionality.
I also do some online math tutoring. This is a whole other type of communication. Part of the challenge to find out what the student already knows, but part of it is to frame questions or give examples in such a way as to get the student to be able to make a leap from what the student knows to mastering what the student has been struggling with.