When to use a reviews list
When reviews should be read rather than counted. Nothing is cropped and the order is exactly the sort order.
What you can set
Items per page, desktop and mobile
Where it works best
A dedicated reviews page, and long-form reviews — legal, medical, home improvement, anything where the detail is the point.
Every layout takes the same sources — Google, Facebook and 69 others — so the choice here is presentation, not capability.
The other layouts
There are fourteen in the editor and they compete with each other for the same visitor, so it is worth knowing when a different one is the better answer. The full gallery shows each one running.