How do you get companions in the outer world?

The Outer Worlds have companions named Parvati. Parvati can be unlocked early in the game by following the main quest line. The man was called Vicar Max. During the Comes Now the Power main quest, you can speak with Vicar Max. The man is Felix. There is no desire to get Felix. There is someone named Ellie. Inside the Medical Bay, the Groundbreaker can be used to recruit her. It's Nyoka. There is a person named Sam.