ArcCatalog maintains files by group type more or less. Folders at the top, File geodb's next and everything else last. See screenshots. I've looked for setting for controlling sort order, but doesn't seem to be options for doing so. Can this be added to Options for listing files in Catalog? Same View Options as Windows would be helpful.
ArcCatalog Tree:
Pro Catalog is 100% A-Z order, with no options to change: