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.