These are some observations I noted while viewing the video.
The truck is probably a first gen Ford Ranger, as seen in other Project Farm videos.
The test setups were prioritized to test a jack stand's capabilities and minimize potential damage to truck or jack stands. The jack stand positioning had NO intent to mean "This is the best way to support this vehicle for your protection" type statement. If that were the case, then I would have expected the front tires to have been blocked to prevent rolling. Blocking the front tires would have dramatically increased the required force to tip the stands, but not shown how the stands were performing.
The two tipping tests seem to show, if possible, the stand's longest foot dimension should be placed to resist the most likely direction of unsettling force to be expected while working on the vehicle. If using four stands, it might be best to have two stands positioned 90* from the other two. That would seem to allow the best use of just the stands capabilities. It seems the data being displayed for the tipping forces is closely related to how much weight is lifted by the rotational arc required to rotate the stands about the radius from the load support pad to the outer edge of the stands' feet. The more initial angle of that radius, either by height reduction or wider base footprint, provides better tipping resistance.
Another point, the stands with tighter tolerances between the stand base and riser seem to resist tipping better than the stand's with a sloppier fit. The looser tolerance seems to allow a pivoting at the stand connection which causes a shortening of the lateral distance required to reach the tip over point.
In summary, the stand designs with the broadest base dimensions and tightest connection tolerances should allow for safest stand performance.
As always, YMMV.
I hope that sums up the most important things.
Stay safe,