While not all inclusive, this is the list that we've come up with that shows who is together and the names of their lines (this is for fifth wheel only). Also from what we've read all but Lifestyles use Lippert in some portion (if not the whole) of their construction process. This has given us a better idea of where to look and where not to look (our personal preference).
Forest River & Subsidiaries
Coachmen
Brookstone
Chaparral Lite, Mid, Signature
Forest River
Blue Ridge
Cardinal
Cedar Creek, Silverback
Cherokee
Flagstaff Classic Super Lite
Rockwood Signature Ultra Lite
Salem, Hemisphere Lite
Sandpiper
Sierra, Select
Suveyor
V-Cross Classic, Platinum
Wildcat
Wildwood, Heritage Glen
Palomino
Columbus
Puma
Sabre, Silhouette
Prime Time Manufacturing
Avenger
Cursader
Sanibel
Shasta
Phoenix
Revere
Jayco & Subsidiaries
Eagle, HT, Premier, Touring Edition
Pinnacle
Open Range/Highland Ridge
3X
Light
Mesa Ridge
Open Range
Residential
Roamer
Starcraft
AR-One Maxx
Autumn Ridge
Northwoods
Nash
Arctic Fox
Fox Mountain
DesertFox
Gulf Stream
Canyon Trail, Advanced Profile, XLT, Sport Series, SLT
RidgeLine
Sedona Advanced Profile, XLT, SLT,
Thor & Subsidiaries
Heartland
Big Country
Bighorn
Bighorn Silverado
Elkridge, Express, Ultimate
Gateway
Landmark Grand Canyon, Mesa, Rushmore, Savannah, Key Largo, Monterey, San Antonio,
Prowler
Sundance, XLT
Keystone
Alpine
Avalanche
Bullet
Cougar, Halft-ton, Xlite, High Country
Hideout
Hornet Platinum Edition
Laredo, Super Lite
Montana
Montana Big Sky Edition
Montana High Country
Mountaineer
Outback
Springdale
Sprinter Copper Canyon
Sprinter Wide Body
Sydney
Crossroads
Cruiser, Aire
Rushmore, Lincoln, Franklin, Washington, Jefferson
Sunset Trail Reserve, Super Lite
Zinger Reserve
KZ
Durango
Durango Goldrush Discovery, Nugget, Klondike
Sportsmen
Stoneridge
Dutchmen & Subsidiaries
Denali
Infinity
Voltage
Grand Design
Reflection
Solitude
DRV
Elite Suites
Estates
Mobile Suites
Tradition
EverGreen & Subsidiaries
Bayhill
Lifestyles
Lifestlyes
Alfa Gold