Windows10 sorts by the random name that someone (Microsoft staff?) invented to describe each filetype, rather than sorting by file-type.
So, for instance, .ZIP files sort as the letter "c". (Microsoft internally calls them "Compressed (zipped) folder").
When trying to find a file of a given type - or check if that type is present in a folder - you're out of luck. The only way to find it is to go to the command prompt and use DIR or LS on "*.[extension]".
Is there a way to un-break windows Explorer and make it correctly order by file-type?