Within CMD, you can always reduce your directory/path to C:> by typing CD.. to "create diretories," minimizing the path and finding a finite area to work from.
From a blank canvas, of sorts, you can paste-in (Right-click on the title bar, properties, check-off both QuickEdit Mode & Insert mode;) ...makes pasting batches, in particular, much more easy and streamlined.
On a more remedial level, to filter your Windows Explorer types by "file type" or "file extension," you can always resort to (if you can bear Indexing / cisvc.exe) an advanced search, saved as an exemplar, and simply clicking the "type" column to sort your results; again, very remedial, I know, but if used a lot, it can work to your advantage, even with minimal indexing.