How does Topher categorize teachers in the novel, Ms. Bixby’s Last Day?

Topher explains very early on that there are six kinds of teachers: Zombies, who are very old and boring; Caff-Adds, who drink lots of coffee and speak too fast; Dungeon Masters, who are very strict and demand quiet all the time; Spielbergs, who constantly show movies; Noobs, who are new teachers who are always hopeful and optimistic, but who burn out after a year or two; and the Good Ones, who make school enjoyable and who students do not want to disappoint.