Ok, now this is going to sound jerky, but I'm just asking out of all seriousness..
Aren't there many channels in your collection that overlap content with others? Are there channels you only use but once a year? If yes, I would first consider whittling your channel list down to under 150.. it'll make organizing that much easier.
There is no way to auto organize them.
Yeah, I got some Rokus.
https://youtu.be/d1CSEeqWl10