I looked at a SuperNova RV built on the international Diesel chassis, and it had a full wall slide on the drivers side, with bunks in it. It also had a rear bath with shower, and a mid bath with just a toilet and sink.
Is that what you are looking for?
If I had ordered one, I would have skipped the bunk beds, and got the optional extra storage cabinets. I think that you might find that is more common than the layout with the bunk beds. However it should be something that is easy to change, should you only find a model with wall slide and cabinets.
In addition to the cabover bunk, it had a couch that converts to a bed, and dinette in the drivers side full wall slideout that converts to a larger bed.
Here are some pictures in this link.
https://www.google.com/search?q=supernova+rv+6400&tbm=isch&imgil=xD35lLjNJv-imM%253A%253Bhttps%253A%...Fred.
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
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