There were a LOT more M's than H's around where I grew up in NW Illinois, about 25 miles from where all those M's and H's were built. The H's were used to mow&rake hay, do hog chores like haul feed to the hog & cattle feeders.
The "Before" video that H sounds better than a JD B, the closest model to the Farmall H. Dad bought a 1940 JD B winter of 1968 after he traded the '39 H off for the '54 Super H. I tried to use the B for some things it could handle but it was so slow, and boring to run with no tractor radio, no electrical system at ALL, no hydraulics, and a choice of only 4 painfully slow gears, and once you got it started you kept it running till you were done with whatever you were doing, it had "Armstrong Start", you turned the flywheel over by hand to start it, but more than a couple times we pulled it with the pickup, another tractor, think we tried a Cub Cadet once, until we unhooked an M or H to do whatever.
TRACTOR DATA says FARMALL made 391,227 Farmall H's, so almost 400,000 made. Add in the W-4, and HV high clear tractors you end up over 416,500 H's and variants to pick from. It's really sad for me to see an old Farmall sitting out rusting away.