Russell Simmons: The Photographer - Great Attribute set up and between his ability and retainer he gathers SOOO many useful items and allies and skills and... you get the idea.
Leo Anderson: The Expedition Leader - Attributes make him a blank slate perfect for adapting to whatever ally, skill and items he starts with. Plus his ability has saved many an investigators.
Mandy Thompson: The Researcher - Good Attributes, her ability makes her such a useful team player.
Patrice Hathaway: The Violinist - Decent Attributes, incredibly useful ability.
Joe Diamond: The Private Eye - Great Attributes other than will, Good ability, great if paired with Hathaway.
Keep in mind i do not have Kingsport yet, so only IH and DH expansion characters.