In case you were wondering
To lay it out:
10) Scientist or physicist (“Metamorphosis” Incidentally, it is worrying that McCoy, a medical doctor, doesn’t think he’s a scientist.)
9) Psychiatrist (“City on the Edge of Forever”)
8) Engineer (“Mirror, Mirror”)
7) Mechanic (“The Doomsday Machine” “The Empath”)
6) Torpedo Technician (Into Darkness)
5) Magician (“The Deadly Years”)
4) Bricklayer (“The Devil in the Dark”)
3) Coal Miner (“The Empath”)
2) Moon-shuttle conductor (“Corbomite Maneuver”)
1) Escalator (“Friday’s Child”)
What he IS is awesome.