The Forest River MB Cruiser Ms"B"haven had was a Sprinter Class B van. It had a rear bath.
http://www.cmrvs.com/mbcruiser/brochure.pdfThe Unity is a Class C and I know Ms"B"Haven fully understands the difference. She was asking about a real Class B Camper Van covered under this forum.
The answer is a Winnebago Era 70C Sprinter has a rear bath with separate shower with a large 2 door refrigerator..
Also the Coach House Arriva extended body Sprinter van twin bed model has a rear bath with separate shower with 6 CF 3-way refrigerator.
The Winnebago Travato 59K Promaster has a rear bath but it is a wet bath substantially larger than most but the refrigerator is a small under counter not much different than the MB Cruiser.
Advanced RV has a model with a bath toward the front with a spacious round shower surround (but wet) and substantial refrigerator/freezers. They also have the largest capacity water and grey tanks of the Class Bs.