I have an equalizer hitch which is adjustable, but I just measured my hitch (couldn’t measure the trailer as my driveway slopes and I have the trailer level) and the top of the ball is approx 24” off the ground unloaded. I have a ‘23 T285 with a ‘12 Ram crew cab long bed diesel truck.
Hopefully this helps.
And yes if it was a 5th wheel, get a B&W hitch as I have one from my old camper.