While I was watching YouTube video on writing rituals, I heard the writer Christy Anne Jones say that she uses Milanote for brainstorming.
Compared to other mindmapping/ brainstorming apps like x-mind, where the nodes and bubbles are predetermined in shapes and directions, Milanote is quite versatile, in the number of things that you can do with it. You can include images, create clusters, and so many other functions, that one can think of.
I feel that, Milanote will help novelists for visualising the plots, to reduce cognitive load.
While Scrivener is good for nested chapter-scene structures, Milanote can be useful for playing around with the visuality of the plotlines.