What do you mean by "off roady?"
They are more aimed at boondocking or “adventure” camping, atleast the ones I like. Built on Sprinter 4x4 chassis.
Like this:
Winnebago Revel | Class B RV | Sprinter Camper Van
Winnebago's 4WD Revel lets you take your adventures on road or off-road. Travel in confidence with this Winnebago class B RV, built on a Mercedes-Benz Chassis.

Guess I probably should not have said most as airstream and Winnebago for sure make more standard ones.
I am sorry to hear about Sweetie, my condolences.