You can build major, minor and augmented triads from the augmented scale, all with major sevenths. I have C augmented scale guitar chord shapes and discuss how to use all the chords that are built from the augmented scale with examples of the chords in popular songs.
The E sus chord is built by replacing the third pf a major or minor triad with the perfect 4th and has the notes E, A & B. The notes for an Esus chord exist in the keys of C, G, D, A & E major. I cover how to build & use suspended chords, show a song example of an E sus chord and have 18 E sus guitar chord shapes.
The diminished triad is one of the four triad types in music. It is a chord that is unstable and has an extremely strong tendency to resolve to the tonic of the scale. From the diminished triad, you can build the fully diminished seventh chord, half-diminished seventh chord, as well as other diminished chords.