Rabbitholes is an AI mindmap tool that automatically builds out a mindmap for you as you click nodes or ask followup questions for in depth exploration of a topic. I like that it provides both images and text and automatically writes several suggested followup questions for mindmap nodes that you want to explore.
https://rabbitholes.dojoma.ai/
Example of one I created on nested learning:
https://rabbitholes.dojoma.ai/view/69252e28d225cebe5ca240c2