Visualizing TD-DFT excitations in terms of NTOs, as a conceptually superior alternative to canonical MOs, has become standard practice. The present work provides a theoretical foundation to understand how the NTOs relate to other common visualization tools including attachment and detachment densities, which are equivalent (within the TD-DFT formalism) to separate densities for the excited electron and for the hole. Atomic (or fragment) partitions of the density change ∆ρ(r) have been surveyed and related to one another. Previous literature has not always been clear regarding these connections.