The rating is the easy half of the answer. A trailer never weighs its brochure dry weight — water is 8.34 lb a gallon, propane and batteries ride along, and so does your gear — and hundreds of models changed their published weights mid-run, so the model year decides as much as the model. Judged that way, with a 10% margin and 2 people aboard: 4906 of 5150 campers fit a Ford F-250 Super Duty (6.7 diesel, tow pkg), and 10 more fit if you buy the right years.
The number that quietly binds is payload — 3,060 lb (Crew Cab 8-ft box (176" WB) 4x2, 6.7L Power Stroke — the only F-250 column Ford's chart rates at 18,000 lb conventional; the 4x4 176" WB is 17,500 lb tow / 2,670 lb payload.): tongue weight lands on the rear axle with your passengers and the hitch, so a vehicle often runs out of payload well before it runs out of rating.
Loaded estimate: dry weight + full fresh tank + propane, battery and gear for 2. Headroom is against the rating less 10%.
FIT — IF YOU BUY THE RIGHT YEARS
These changed their published weights mid-run: some model years clear a Ford F-250 Super Duty (6.7 diesel, tow pkg), others don't. A listing site treats them as one trailer. They aren't.
That depends on what you care about — bunks for the kids, build quality, budget, weight you'd rather not tow. Set your priorities as sliders and watch all of these re-rank around them, live, with your vehicle already filled in. Nothing gets hidden.