The following is an unscientific collection based on popular perception and from sources like the old Jade Falcon and Wolf phonebooks and the Luthien and Tukayyid scenarios and limiting a Mech (omni and standard) to only one Clan while attempting to provide a range of weight classes and roles. Considered factors include Clan of origin, production rights, proliferation, and gut feeling.
Jade Falcon: Kit Fox, Hellbringer, Summoner (added circa Tukayyid: Fire Falcon, Black Lanner, Night Gyr, Turkina)
Steel Viper: Battle Cobra, Crossbow, Vapor Eagle, Black Python
Wolf: Adder, Ice Ferret, Timber Wolf, Gargoyle, Orion IIC (added circa Tukayyid: Phantom, Pouncer, Linebacker)
Ghost Bear: Fire Moth, Viper, Mad Dog, Executioner, Kingfisher, Kodiak
Smoke Jaguar: Mist Lynx, Stormcrow, Warhawk, Dire Wolf (added circa Luthien: Ebon Jaguar)
Nova Cat: Arctic Cheetah, Shadow Cat, Huntsman, Jenner IIC, Supernova