Single transistor common-emitter amplifiers (max. gain ~200x)

The common-emitter transistor configuration is most widely used as a low frequency audio amplifier or as a switch. Due to the Miller effect, the bandwidth of this kind of amplifier is limited. As long as we are using a single transistor, the gain will be maximum ~200x (ca. 46dB).
In the image below, you find some basic common emitter amplifier circuits for AC signals, each time with an improvement added or with changes to reduce the gain to lower values.