I've had all three, in some sort, and been around many more. All (except one set) with near new tread, military takeoffs.
The MT's have an aggressive pattern, so ok in deep mud and rocks but bad in ice/snow. Also, most of these are from the 90's, the newest are still probably 10+ years old now. The rubber in the set I had was really hard, but they were old (they were built in the mid 90's, had these probably 10 years ago, but they still sell them as "takeoffs"). Honestly, I'd skip these for sure.
I had two sets of the Baja T/A's. Both sets were at least a reasonable manufacture date (2010 or so). They wore well, put ~20K on each set and I don't think I wore halfway through either. Not bad, what you would expect. Decent offroad.
The MT/R I actually didn't have in a 16.5, but in a 15. Still a 37" tall tire, even ran them in my Blazer/buggy, but same tread pattern. No complaints on those at all, plus they're the newer and most recent military 16.5's.
They're definitely the cheap way to 37's on a trail rig. If you spend much time at highway speed, you'll hate ALL of the military tires.