In this work, we applied POD and DMD techniques to identify the dominant MHD wave modes in sunspot umbrae. The sunspot intensity time series employed in this study were acquired using the Hydrogen-Alpha Rapid Dynamics camera at the Dunn Solar Telescope (DST). The POD technique was used to find modes that are spatially orthogonal, whereas the DMD technique identifies temporal orthogonality. It was found that the combined POD and DMD approaches can be successfully used for MHD modes detection. With the DKIST era now upon us, these same techniques can be applied to much higher resolution data, allowing us to probe the fine structure of sunspot umbrae with local helioseismology.