If you have made any changes to the default raster type, you will probably want to save your changes. This way you can re-use your custom raster type if you want to load additional raster data with the same properties and functions.
To save your custom raster type, click on the General tab. At the bottom of this tab, you will see a Save As button. Click the Save As button, and save it in the location where you keep all your custom raster types.
Now you use your custom raster type when you want to add rasters using the same parameters. Furthermore, since the custom raster type is saved in an XML file, you can share it with others within your organization, so they can also perform the Add Rasters to Mosaic Dataset with the same parameters.