Bolly's thumbnails are 2 channel audio displays.
Scope tuners display the output of the IF section before the detector, allowing the user to see the desired channel's main peak, adjacent sidebands, multipath, or asymetry, and adjacent channels so the tuner can be set precisely. The center channel meters look at detecteor output DC levels, and cannot discriminate the tricky tuning situations I listed. The typical pattern would be a hump, with spikes off to the side. The Day Sequerra tuner had a sexy scope display, and you may find pics by searching that name.