So I guess a comparison between TextEdit and Pages doesn't make too much maybe, they're really different things.
On the other side of the fence, WordPad initially came with source code as well, and was essentially a demo app for the rich edit control as well as the criminally underused text converters[1].
https://support.apple.com/en-ie/guide/mac-help/mchlp1341/mac
Another one is Cmd+H for hiding an app. People often minimize the current window to see the next app underneath, while hiding the current app is much more elegant and creates a lot less friction for restoring it later.
Which of these hidden champions did I forget?
But it can still do a lot.
Feedback appreciated! https://jort.app/