I wasn't implying your case specifically, you just mentioned a multiple of Broncos. Some Mook came in here last fall and proclaimed he was expecting his 4th in 2021. Ford should know better, but allowed it.
Kinda like scheduling the launch of the all new Ford Bronco TM on Orenthal James Simpson's birthday (July 9th) then delaying it nearly a week to July 13th...
Manual wasn't originally specified or I missed it. Reason I said torque converter is because I was watching a Visegrip Garage drag week video and they had the torque converter nuts on a GTO come loose and had to fix it at the track. Made a bit of a racket, didn't frag...
Vehicle doesn't have to be moving for a lose component to make a clicking noise like a torque converter wallowing in the flexplate holes... the converter is captured but can move about with lose nuts.
Auto or manual, my thoughts upon your description are lose fasteners in the driveline, cv joints, mounting -flywheel/flex plate bolts or torque converter nuts, etc.
I bought an F350 based on the assumption that if any of the spark plugs on the 5.4 were going to spontaneously depart the motor, they would have by 180,000 miles, it went on to prove my assumption incorrect twice before spinning a main bearing at 218,000 miles... $2,000 for 38,000 miles wasn't...
Nope, some VINs just occur randomly without notice, but have the same response from the reservationist, instant release of tension, relief and ebullience.
Anyone who pays domestic retail for something that is identified as made in PRC... Hasn't been paying attention to the past few years, certainly not decades.