The list of instruments given:
1. Electric Guitar
2. Glockenspiel
3. Piano
4. Violin
5. Xylophone
6. Harp
Out of the list given, the two instruments that are not examples of chordophones are the Glockenspiel and the Xylophone.
Both the Glockenspiel and the Xylophone are Idiophones, which are musical instruments that produce sound by the vibration of the entire body of the instrument.
The Electric Guitar, Piano, Violin, and Harp are all chordophones because they produce sound by the vibration of strings.