Example one is a (dry) guitar loop without effects.
Chorus adds a subtle wobble that gives sense of width.
Phasers or phase shifters create a swirly sound.
Flanger is similar to a Phaser with a more extreme phase shifting sound.
A delay creates echos. "Slapback" delay is set to 100 miiliseconds with 1 repeat.
A delay set to 300-500 milliseconds with a few repeats creates live sound thickness.
Reverb - creates reflections that emulate the sound of a small room up to a large space.
Vibrato or tremelo rhythmically turns the volume down then up.