Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Unfortunately, no, there's no such list. Also, the list would change based on the model Roku and the user's location. If you use the web site channel store (https://channelstore.roku.com/browse), it might be easier to browse than doing so on the Roku itself. But be aware that the web site might show channels not available for your location or work on your specific device.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.