Your Michelin, Firestone and BFG choices are roughly equivalent, but I'm not sure about the Wrangler SR-A, which is sort of a comfort/performance tire for SUVs and passenger pickups. At this price level, the equivalent Goodyear might be Wrangler HT, their commercial tire for light trucks.
A notch above, all-steel or armored tires for heavier commercial "light truck" would be Michelin XPS series, Goodyear Armor Max (two tread designs) or Bridgestone Duravis (two or three tread designs). These get into steel body plies, for long life, but carry also the responsibility to never run them underinflated, which can quickly destroy them via metal fatigue. The cheaper polyester body tires are more tolerant of fatigue, but more sensitive to heat.
The BFG and Michelin tires you are looking at are equivalent in application, from the same manufacturer, just two different brands.
I chose to upgrade to all steel tires with my last tire change on the RV, but I don't think I would ever make that choice on my one-ton van, which has to ride nicely at light loads.