It suddenly occurred to me that you aren't familiar with using the OS to sort. It is easy. Double click to open the folder. It is automatically sorted by name, but as you look across the header you can see little column headers, Name, Date, Size, etc. In Windows 10 it has a column called file type. Simply right click on the header in the column and the OS should sort on that column. I created a couple jpgs to illustrate, but don't know how to import them here.
If it isn't pretty o9bvious after trying it, let me know and I will email you the screen shots.