I find it kind of weird that these companions you get/are unlocked in the crown shop: Monterrey Jack Froggo Villa Ratbeard Monkey King Old Scratch Thunder Hoof Nikeeta El Tiburon
If anyone can tell me why these companions you get/are unlocked in the crown shop would be helpful.
Silent Austin Higgens
First off, everyone gets old scratch, ratbeard & monkey king regardless of pirate faction. For nikeeta & el Tiburon, you have to do the quest that requires you to defeat them, then they'll unlock in the crowns shop for purchase. For the rest & any other companion location-related questions, please consult with this guide here. I hope that I helped some.