Orlocks - Harley Davidsons and pickup trucks.
Escher - classic 50s and 60s American convertibles (gotta leave room for that hair).
Delaque - big black limos with blacked out windows - large black Mercedes or Audi saloons.
Goliath - Jeep wranglers (mainly TJ model).
Cawdor - beaten up minibuses and people carriers.
Van Saar- this is more tricky. I don't really get a vehicle "flavour" from Van Saar. Perhaps sports motorbikes.
Spyrers - high end sports bikes and supercars.
Pitslaves - anything that looks one step from a scrapyard or like it was just pulled from a scrapyard.
Ratskin Renegades - scrappy off-road buggies, or just horses.
If we’re doing “any time or genre” I’d have to go with… ORB of course
Escher: Rat rods and Tokyo street gang motorcycles
Goliath: ork warbikes and war wagons.
Orlock: Harley Davidsons and pick up trucks with tow modifications
Van Saar: Gyrospheres (like from Jurassic Park) and HumVees
Cawdor: Church Buses and dirt bikes
Delaque: Tron Bikes and sports cars
Arbiters: Fifth element style patrol cars and Judge Dred bikes
Spyrers: hover bikes and Colonial Marine APC from Aliens
Ratskins: gyro stabilized monocycles and Star Wars landspeeders (but covered with stowage)
Skaavy: mad max style machines
Genestealer cult: limos and sports cars, but Munster Style.