Simply to see what/how Windows presents the drives.
[Note: Actually, looking back, I neglected to ask about the source of the image in Post #1..... Windows Explorer?]
Disk Management provides much more information about drives and partitions.
If all three lettered drives are "the same" then all would have the same icon.
A broken icon, I think, would result in all three drives, having the same icon as C:
Really do not know at this time.
Looking for somethng that is different with respect to C: vs D: & E:
Could delve even a bit deeper via Powershell. Not ready to do that yet......
The different icon may be the result of some property mis-configuration.
End users can chose icons for many things.
The "C: icon" difference may just be the result of a typo or some error in properties.
FYI:
https://www.tenforums.com/tutorials/74659-change-drive-icon-windows-10-a.html
Not a matter of screenshot per se.