Just noticed this on the Marriott website as to how Marriott differentiates its brands:

Luxury

* The Ritz Carlton
* Bvlgari
* JW Marriott

Lifestyle/Collections

* Edition
* Autograph Collection Hotels
* Renaissance Hotels
* AC by Marriott
* Moxy Hotels

Signature

* Marriott Hotels

Modern Essentials

* Courtyard
* Springhill Suites
* Fairfield Inns
* Protea Hotels

Extended Stay

* Residence Inn
* Townplace Suites
* Marriott Executive Apartments

Destination Entertainment

* Gaylord Hotels
* Marriott Vacation Club