Thanks, but I don't believe there is the standardization across kb's that you suggest.
Or maybe there has been since the era when the Apple Wireless Keyboard was released, but which don't apply to that kb.
The key definitions are also affected by the browser.
So, e.g., Shift-Cmd-G (which the article says opens a 'Go To Folder' dialog) instead opens a 'find' dialog in Brave (and I assume Chrome); i.e., same as Cmd-f.
Also, the Apple Wireless Keyboard has keys that most kb's don't -- e.g., 'Home' and 'End' keys. Plus several more function keys (F1-F16).
I am always accidentally finding new functions from different key combinations, so I had hoped to find a listing focused on the key definitions for that particular kb that I could refer to.
I'm surprised I haven't been able to.