If you would like to know more about Chicago Style Basics, check HERE or Kate L. Turabian's A Manual for Writers of Research Papers, Theses, and Dissertations (9th ed.). Turabian is the student version of The Chicago Manual of Style, aimed at high school and college students who are writing papers, theses, and dissertations that are not intended for publication.
The 7th edition includes Bias-free Language (Chapter 5). The online summary is available at https://apastyle.apa.org/style-grammar-guidelines/bias-free-language/
These resouces were written by indigenous writers/scholars.