All signs not expressly permitted under this chapter or exempt from regulation in accordance with the previous section are prohibited in the City; such signs include, but are not limited to:
1. Beacons;
2. Pennants;
3. Strings of lights not permanently mounted to a rigid background, except those exempt under the previous section; and
4. Inflatable signs and tethered balloons, except those waived by the City Administrator for display during City sanctioned events.