In sand, vehicle weight and the ability to float and not dig down, i.e. flotation, is a thing. It's why airing down is so important.
Smoother highway tread tires can work better over AT or MT tires as the tread applies more even load on sand without aggressive features scooping aside sand and digging down.
Taller overall diameter tires will also help, especially when aired down, to create larger contact patches again for more flotation. And more ground clearance to keep axles and frame rails above the sand.
Given the same tread and same overall diameter, wider tires can help further still. To maximize flotation by spreading the load over as much surface area as possible to stay on top of the sand. This is especially helpful for very heavy rigs to avoid digging down, and why wider flotation tire sizes exist, to help in loose sand, mud, and snow type terrain.