I thought AT bindings were primarily for downhill skiing, but with the option to unlock the heel for climbing. But my ski experience is cross country using NNN

I thought AT bindings were primarily for downhill skiing, but with the option to unlock the heel for climbing. But my ski experience is cross country using NNN and NNN BC bindings, and the ones in the picture look like old school 3 pin bindings. Edit: Viewing on desktop, it's clear these are not 3 pin bindings.