[kqr]

At least in some versions of Adobe software, on some platforms (was years since I used Adobe so I can't remember if it was on Windows or OS X), once you've selected one blending mode, the drop-down control is still in focus so you can use the scrollwheel on your mouse to cycle through them.

[KineticLensman]

Mouse scrolling through the blending dropdown is still a thing in Photoshop CC. It sometimes catches me out when I want to mouse-zoom the window immediately after choosing a blending mode