Many many years ago I wrote a book for Apress, and the style guide for that instilled in me a lot of practices that now make my writing feel LLM-ish to some readers:

- Use bulleted lists, but always introduce and conclude a list with prose; a list can't immediately follow a heading or end a section.

- Use a mix of long and short sentences; in long sentences with parentheticals, use a mix of commas, parens, semicolons, and em dashes.

- With multiple continuous blocks of prose that aren't naturally broken up by an illustration or heading, start a paragraph with an inline bold statement to help anchor the reader.