I figured it'd just go by description. If they heal, be it themselves or others, they would be under the heals option. If the word shows up under their descriptions then they'd be there. Even if its someone like Guy who heals small amounts with tai damage, or like jinchuuriki who heal themselves.

Thank you slowpoke, I did not know you could do that. It'd still be a nice option though.

^ Agree 100%