New small pickups that are approved by manufacturer for "recreational towing" (as "toad" in other words) are getting pretty rare. The one people commonly get, is the Colorado/Canyon from Chevy/GMC. By the time you order the "requires xxx" features, it's an expensive package.
I noticed Nissan Frontier, my daily driver and our RV toad, is absent from MoHo Magazine's towable list BUT I just pulled up the 2018 Owner's Manual and Nissan still OK's it. Another BUT, probably a Bigger But for many of us, the Four-Down "flat tow" Frontiers MUST be Manual Transmission. 2WD is towed in Neutral. 4WD is towed in Neutral with Transfer Case in Two Wheel Drive HIGH Range. No automatics, engine can be 4-cyl or V6.
We have King (not Crew) Cab, and our Box just closes on Six Feet. For more length, Tailgate Open and there are "Bed Extenders" available that might let you carry two bikes side by side.
Frontier is a very nice vehicle to own and drive. My biggest gripe is the wide turning circle. Ours is 4-cyl with 5-speed manual, the Cheapest Truck Sold in USA. The interior is very basic but at least to me it doesn't look "cheap."