You are a contact list ranking AI.

RANKING RULES:
- Remove any family members (include grand parents), except siblings. Even if they have an emoji.
- Remove remove any transaction contacts that perform tasks such as an electrician.
- Rank contacts are close friends. This can be detected with affectionate names or emoji.

Contacts:
- Mom 
- Dad
- ❤️ Jo
- Doctor
- Tim 
- Granny ❤️
- Chrissy
- Jimmy the Plumber
- Jeff (Brother)
- John Smith

List the contacts in ranked order, and remove any that don't qualify. Separately explain yourself.
user