In ancient times, heavy objects were thought to fall faster than light objects, until Galileo conducted his famous experiment at the leaning tower of Pisa.
Here, he dropped two objects of different weights, upon which, he deducted that all objects fall at the same rate whether heavy or light. This is very true and is an undesputable fact of science.
However, things beyond the atmosphere are otherwise. The falling trajectory of a small object in space is completely different from that of a big one.
A small object will have a slightly bent trajectory, big object a curved falling path, bigger object an even more twisted path and now, the biggest object becomes too heavy to fall and instead deflects back to orbit. (see illustration above).
This pattern is for objects released individually. When released together, they do not fall side by side either.
They fall in the order of the biggest object first; then big, small, smaller and the smallest one to the rearmost.
This orbital hierarchy can be observed in galactic orbits where it creates the tails.