I have been trying to find a case where AES-192 is used over AES-128 but AES-256 is not used. There are many questions about AES here (I liked this one AES-128/192/256), but from the actual application side, I was unable to determine any cases where AES-192 was used over AES-128.
AES-192 seems to exist because levels of security were desired, but hardware implementations seem to be AES-128 or AES-256. I did a literature survey on the IEEE and I couldn't find any applications in the hardware space that used AES-192 instead of AES-256, and I could not find anything in the software space, but I did not dive into specific implementations.
Is there any compelling or logical reason to use AES-192 over AES-128 but not use AES-256?
Maybe you can even point me to an example – meaning: some application or implementation where AES-192 is used over AES-128 instead of AES-256?