From the OneWorld website (linked to above), the only alliance benefits of Ruby are:

- Access to Business Class priority check-in
- Access to preferred or pre-reserved seating*
- Priority on waitlists and when on standby*

* In accordance with the individual policy of the oneworld airline operating the flight

Each airline may or may not offer their own members additional benefits (eg. lounge access for QR Silver) that are not available to other airlines' members.