Yes, the Nuna RAVA does have 10 different recline settings - there are 5 recline positions when in rear-facing mode and 5 when in forward-facing mode! They are labeled in blue for rear-facing use and in red for forward-facing use.
The RAVA is designed with multiple recline positions to provide comfort for your child and to accommodate different vehicle seat angles. The recline feature helps ensure that your child is in a safe and comfortable position while traveling.
Page 38 and 39 of the RAVA manual discuss the recline: