My Google Assistant App was approved within about 24 hours. That's pretty fast and beat the expectations they set at 'a couple of business days'.
It's published under 'Games & Fun' which pretty accurately describes the content - it doesn't contain anything useful, but is intented to be humorous.
The app brings to life a character I created with my kids named Chuckles the Dirt Chip Muffin - The Worst Muffin in the World. It has a bunch of quotes and silly commands.
Anyway, they approved it. It was fun to make and educational. Here is the link in the Google Assistant App Directory: Chuckles the Dirt Chip Muffin.
You can also reach him by saying 'OK Google Talk to Chuckles Chat' in Google Home or in the Google Assistant App.