It is difficult to modify the text as you suggested to “Popular channels in xxx” and “All channels in xxx,” because the value “xxx” would need to dynamically change according to the selected country, which is currently not possible for us to implement.
However, we will review your suggestion to add a “Favorite channels” group before the “Recommended by Rose” group, and if it is technically feasible, we will consider adding it in a future update.
When searching, sorting or displaying, either ignore Determiners at the front of a media’s title/name or preferably move the determiner at the end of a media’s title/name; e.g., “Whole Lot Of Loving, A”, “Beatles, The”, “Mamas and Papas, The”). Add the following user settings
For English music:
English Determiners are: 
A The They ← the user can select one or more Determiners
When searching, sorting or displaying, the above English Determiners are a to be: “listed and ignored at the beginning of media titles/names” or “moved to the end of the media titles/names”
For french music,
add user setting: French Determiners are: L’ La Le Les ← the user can select one or more Determiners
When searching, sorting or displaying, the above Determiners to be: “listed and ignored at the beginning of media titles/names” or “moved to the end of the media titles/names”
Note: The above Determiners customizations apply to all metadata tag titles and names (e.g., Music Album/Song Titles, Artist Names, Video Titles, etc.)
Note: User Interface to process multiple field entries in a metadata tag (e.g., in the Genre tag and the Artist tag). The default Delimiter seperating multiple entries is a semicolon (i.e., “;”)
permit user to define the desired delimiter in a user setting; such as :
Multi-Metadata Tag’s Field Delimiter is: ;