Hi @Tomas_Jansson1, maybe you are aware of this topic, but just in case you’re not:
@Paul_Danyliuk shared an impressive doc in the #how-to-doc-show-and-tell-and-formulas:docshowandtell category, demonstrating how to make a ‘mind map’ from a table: Mind map (tree chart) implementation (!)
I guess you could make a collapsible list from that table too if that’s the combination you are looking for!