Probably not, if it must really be shorter than 26 feet, because even with slideouts making more room, you need a larger box to fit kitchen, bathroom, sofa, dinette, and a bed on the floor.
With dinette, but not sofa, this was a common size and layout for the rental market for about 10-15 years from the late 1990s until the collapse of the RV industry in 2007 to 2008.
Models 22B and 24D from Fleetwood in the Jamboree and Tioga lines. There was a 26Q that had the rear bed open on two sides, but that was 27 feet or longer and still had either sofa or dinette, but not both.
Model 24M from Jayco in the briefly made Escapade line. You could get sofa, dinette and rear bed in the Escapade 28G, but that was almost 29 feet long.
Model 25DS in Jayco's Greyhawk line.
Model 2450S in Forest River's Sunseeker line. Sofa, dinette and bed in the 2900, which was 30 1/2 feet long.
Models 23A and 24T in Thor's Fourwinds, Chateau Sport and Dutchmen Express lines. The 24T was 26 feet long in the Ford, a bit over that as a Chevy. Sofa, dinette and bed in the 28A, just under 30 feet long.
Model 24V in Winnebago's Minnie and Itasca Spirit lines. Sofa, dinette and bed appeared in the 29B and 29K models, which were 29 1/2 feet long. These floorplans migrated to the Outlook line in 2006, then to the entry-level Access line in 2008. The 26A model in all of these lines offered a little more room, adding a chair (not a sofa) to the living area, but was a bit over 27 feet long on the Ford chassis, 28 feet on the Chevy.
Winnebago put a dinette and rear bed in the Mercedes-platform View and Itasca Navion 23J models, about 24 feet long. This evolved to model 24J in later View/Navion models. Look also at the Melbourne models from Jayco, Chateau and FourWinds Sprinter models from Thor.
There are more options if you don't really need the cab-over bunk, which opens up offerings from Phoenix Cruiser and some newer, smaller motorhomes. Winnebago puts a rear bed in dinette in the Promaster-platform Trend 23L; this offers a studio loft bed rather than a cab-over. The Transit-platform Fuse 23T has a walk-around rear queen bed, dinette and bench seat up front, but no loft or over-cab bed. Look also at Thor's Siesta Sprinter, Citation Sprinter, Synergy lines, and Gemini and Compass RUVs on the Transit platform.
Not needing cab over also opens up small Class A lines like the Mercedes-platform Winnebago Via, rear corner bed and street-side dinette in model 25P, just under 26 feet long.
