Hi all, I'm trying to make the stone sorcerer as a private homebrew, but I'm struggling to add the Metal Magic spells. Do I need to include Paladin spells to my custom subclass's available spells? I feel like I've tried various combinations of options but cannot get those spells to appear.

Where are the Metal Magic spells from? 

As far as I'm aware they are all Paladin spells, is that what you mean?

Edit - Branding Smite and Magic Weapon are from the Basic Rules, the rest are from the Player's Handbook.