I would like to add something ...
I truly believe that Node-RED is one of those "products" which don't really need marketing. Of course, you could speed things up with active marketing but it's just a matter of time until more people in other industries (and education) will notice. So maybe Node-RED is not on those lists (yet) because nobody is trying hard enough to get it there, which is okay.
And if you read Nick’s blog post about the future of Node-RED, you will notice that the core team is very well aware of what needs to be done / implemented. After all, it's an open-source project, yet I am stunned by the quality and the pace it's evolving.
Until then, Node-RED will be that hidden gem.
On a side
Happy Weekend everybody!