I've just read the updated App Review Guidelines.
https://developer.apple.com/news/
Found this bit interesting:
"4.1(c): This new guideline specifies that you cannot use another developer’s icon, brand, or product name in your app’s icon or name, without approval from the developer."
...it's terrible that this even has to be written down as a rule. Unfortunately, it's !just Apple that has problems w/ copycats.