Most Valuable: The Sheikh
Least Valuable: Chef (redundant to the waiter in almost all cases plus the Waiter is used for an actual Opportunity)
Most Valuable: Hazmat Suit
Least Valuable: Priest (as far as World of Tomorrow goes, totally useless)
Most Valuable: Militia Soldier
Least Valuable: Intern
Most Valuable: Hotel Staff
Least Valuable: Jordan Cross Bodyguard (you can easily end up in the more powerful The Class crew member disguises to be in proper range to acquire a JC Bodyguard disguise)
Most Valuable: Debatable since permissions and availability are evenly spread out. Maybe Pointman due to almost no enforcers being available against it.
Least Valuable: Regular Militia guards (lowest permissions available)
Most Valuable: Hospital Director, closely followed by Helicopter Pilot
Least Valuable: Gardener
Honorable Mentions for “Totally Useless”:
Vampire Magician (Paris)
Fortune Teller (Marrakesh)
Note: Scarecrow at least has superpowers to ignite NPC’s for Accident Kills.