Hi, I found that https://developer.garmin.com/connect-iq/user-experience-guidelines/displays/ has incomplete table of screen dimensions (at least for Edge devices). I miss 282x470, 246 x 322 and 230 x 303 dimensions.
Generally speaking I would love to have documentation suggestions form as Google has.
Try to visit eg. https://support.google.com/admob/answer/7356092?visit_id=637612646200931752-1756091574&hl=en&ref_topic=7579128&rd=1 move mouse cursor on gray line in the middle of the screen and suggestion button appears.
For me Garmin SDK is quite hard to find info that I look for so this feature could improve unclear parts of the documentation a lot.