Brightest spaxels spectrum (left) and Fourier power spectra of the wiggle spectrum (right) for all the NIRSpec IFU data used in this work. The high-resolution datasets show two distinct peaks associated with wiggles at characteristic frequencies of ~20 µm⁻¹ and ~40 µm⁻¹. In contrast, medium-resolution data (e.g., P330-E, used in Law et al. (2023)) only show the lower-frequency component, indicating that the 40 µm⁻¹ peak is unique to high-resolution modes.