Here’s what I’ve verified about Your Services:
- Sonos arranges the services in alphabetical order with exceptions
- The exception to #1 is that Sonos will place Sonos Radio as the Preferred Service upon initial setup and/or when the app is deleted and re-installed
- To correct #2 you must go to “Manage” and select your preferred service which will then be first on the list
- After #2 and/or #3 are satisfied all other services will be in alphabetical order
- If you have a voice assistant installed like Alexa you can ask it to play the service you want assuming it’s way down on the list as the OP has indicated *
- Unfortunately, I can’t verify/reproduce what @Jamie A has suggested regarding most used moving to (or near) the front of the list
The OP’s request is one that I would welcome as well; although not a top priority on my list
* Although Alexa will fetch the requested service it may not play the music in Lossless when available. I can confirm that Apple Music will not be played as such however Spotify will play in Lossless. Lack of Lossless playback is not a Sonos issue; but how Alexa has been approved to access the service.