Ok so most of these should be able to use cellular data without any issues. It’s down to the app developers to provide these functionalities.
In comparison let me show you some apps that do support cellular data and way more data hungry than the ones you mentioned.
Streaming apps -
- Spotify
- tune in
Navigation app -
- Citymapper
- Uber
Email client -
- native iOS email client
Messaging app -
- iMessage
- signal
- WhatsApp (I’m not 100% sure as I don’t use it anymore )
As you can see if you can get all these apps working then there’s no reason for any other apps to not be able to support cellular data. So it’s upto the developers to decide which feature they want to provide in the watch app.