John Grisham is a terrific storyteller, but his writing style is not very distinctive. Surely he cultivated this lack of distinctiveness on purpose. His brilliance is in the way he tells stories. The foundation is of course his writing style, but the point is, the style is receded. The story is the focus.
Writing is not about the words on the paper but about the scenery and events that the reader builds up in their mind as they read.
So writers need to be careful not to burden the reader with too many details that the scene in their mind becomes burdensome. Detail that brings new enlightenment to the reader is often welcome. When a character enters a building, saying something informative about the uniqueness of the building can be satisfying for the reader. Here I refer to informative that is factually true in the real world.
Even if the building is completely fictional, the writer may refer to its (fictional) architect as someone influenced by a certain non-fictionaly style or culture, and the idea behin that style, and therefore this building, like other buildings influenced by that style, has this certain feature. The reader then files away this information and is delighted when they do encounter in their real world that certain style in a certain building. One simple but overused example, is the fact that in some countries, Hong Kong for example, buildings don't have a "4th floor" (the floors go: ground, one, two, three, five,...)
The reader is engaged when the story brings them to a scenario where a character encounters something new to the reader.
The readers is fascinated -- "This is new to me. How will this character intaract with this scenario? How will normal characters interact with this scenario?"
The read is also engaged when the story brings them to a scenario where the reader has themselves been before.
The reader is again fascinated -- "How will this character react to the scenario? Is that how I could have reacted? Why didn't I?". In this case, where the reader has actual experience, the writer is very much at risk of being caught. When they make up things that is so different from actual reality, the reader gets bummed. "That's not really how it is. This writer has never been there."
There are other writers with a distinctive style. Tom Wolfe, Carl Sagan, both are very identifiable. But even for them, the style is just the vehicle for the stories they are telling.