Music come and go, so what genre of music will replace the current mainstream genre of rap and trap?

My best guess is electronic, but there are so many genres in electronic music also, so what genre is going to replace rap and trap? Any clues guys / girls?

As far as I know electro swing
[youtube=https://www.youtube.com/watch?v=Eco4z98nIQY]

[youtube=https://www.youtube.com/watch?v=UbQgXeY_zi4]

and nightcore
[youtube=https://www.youtube.com/watch?v=cvaIgq5j2Q8]

[youtube=https://www.youtube.com/watch?v=TiVIFMbwxOc]

is growing (though they are still in infant stages), any other ideas?