Do you think there are some professions (doctors, lawyers, engineers, teachers, truck drivers, sales, etc.) or industries (tech, health, etc.) that are more into FIRE? e.g., do you think there are more FIRE teachers than FIRE firefighters? Any educated guesses?

On one hand, having a healthy income (like a doctor) would make you prime candidate. At the same time, if you're a doctor then you have a pretty stable job and probably enjoy it, so why FIRE?