Writing a book chapter. Figure etiquette
Disclaimer: I am not a lawyer and the following is just my opinion.

Copyright protects expressions but not ideas or concepts (https://www.copyright.gov/help/faq/faq-protect.html). If the figures are entirely made by yourself expressing the ideas of the original works, while the original sources are properly cited, I don't think you have anything to worry regarding copyright.

Also, in many countries, a design of simple words and/or simple geometry shapes are not qualified for copyright protection. See the Wikipedia article for Threshold of originality.