From this answer I gather that LDS teaches that all beings are eternal and that by eternal it is not meant existing timelessly beginning at some point but, rather, not actually having any starting point. Indeed the answer asserts that the first "stage" in the existence of every person (and also every God) is that of "intelligences". An intelligence then becomes a spirit being (the manner of this transformation is unrevealed) and a spirit being is embodied in flesh at mortal birth, lives on after mortal death, and has the opportunity to be exalted to Godhood.
The "intelligence" is asserted to be uncreated and self-existent.
This related question indicates that the LDS view of the Genesis account is that God did not create matter in the beginning but, rather, organized already existing matter. I have not ascertained if this pre-existing matter is self-existent. It is clear, however, that LDS teaches it was not created ... at least not by the God of Genesis.
Given that LDS teaches that all beings are self-existent (not created) and that matter was not created (at least not by the God revealed in Scripture), how does LDS interpret Colossians 1:16 which appears to clearly state that there is not anything anywhere that the God of Genesis did not create?
For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him Colossians 1:16