I know what you're talking about here. I could solution this better for sure. The name and description boxes have a UI requirement to be edited before being marked as "ready", so as a dev, a bug I kept working around forgetting to resolve was this.
You just gotta edit the text in each field and you're able to make a companion- but currently any selection will always give you Lexi.
The next update I push will correct these two issues- so you are "ready" as soon as you click a companion, as well as the other avatars being appropriately spawned in the ship. I'm also adding one more female avatar, to make 3 female and 1 male avatars in total.
Thanks for checking it out, by the way.