When we were homeschooling, some of the kids taught me about mind maps, which are also called concept maps. I remembered it recently as I've been developing a new item for my Etsy shop and I'm figuring out what to call it and how to position it in that marketplace. It's a very helpful tool for creative thinking. This one uses obesity as an example topic.
Also on these boards
Concept map that explains diabetic ketoacidosis causes, pathophysiology, diagnosis and management. This map links between all aspects of DKA to simplify understanding and memorization. This map is part of Diabetes Mellitus Concept Map from Zoom out - Pharmacotherapy website.