I don’t think this is a cluster question, it seems but i think it’s more like color by different category.
And each point stands for sub-categories and lines stands for the connections.
And the location of each point can be random or defined.
So want do you want?
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I find some Vizs a little bit similar to your post.
You can download and see it.
For the line connections, I think it’s not that easy to achieve and you have to change your datasource to define the line where to begin and where to end. (longitude and latitude) SEE links below