That is a fairly common feature set for 19-22 feet, so long as you are not looking at entry level and/or ultralight where they might compromise on furnishings in order to keep down cost or weight. What will be harder to find will be carrying capacity. Ultralights are trying to limit the GVWR, so they will be built on lightweight frames and have a small margin between empty and maximum weight. Entry level TTs tend to skimp on the cost of appliances and use lightweight frames to keep costs down.
I have friends with the entry-level lightweight Amerilite 21MB, and while it is really nice for a cheap lightweight TT of conventional construction, it doesn't have much carrying capacity and Gulfstream no longer makes it.
I suggest Northwood's
Nash 17K which is 22 feet long (despite model designation 17) and puts 4400 pounds of trailer on a 7000 chassis, right in the range of what your truck can be expected to handle. This one is generator-ready for boondocking, but you would likely be installing a LPG genset, so run-time is related to tank capacity. 50 gallons fresh water is really generous for this size TT.
Looking more at this, thinking about it for my own shopping list, should I make the transition from motorhome to TT.