In 2018, ESRI added ESA's Sentinel-2 imagery as a layer in the Living Atlas. The imagery defaults to the "best" image using a filter but that will not always be the most current image. Since there is date/time attributes, I thought you might be able to use the time aware configurable app with the Sentinel-2 image service but it will not accept it as a time aware layer.
I would like to see whatever change is needed to the Sentinel-2 imagery service within the Living Atlas to allow its use within the time aware configurable app. Due to its repeat cycle, it's incredibly valuable to be able to cycle through recent images to study recent changes.