Right wheel formula for heavy terrain?

Hello, my wife and I are in the first planning phase for our world motorhome, because we want to take a longer time out in 5 years. I have already asked the various manufacturers, which wheel formula they consider most useful for the heavy, worldwide off-road use, but did not get a clear and satisfactory answer. I am of course aware that the choice of the chassis also has to do with the range, water quantity etc., but wanted to know about you It would also be nice to hear a few experiences from you about the respective drives (whether long-distance motorhome or construction site vehicle etc… is heavy terrain). Thank you for your answers LG (was not sure if I should post it here, or in the offroad forum, but basically it is about trucks )