Don't agree with 1st caste. Doesn't account for term limits. Politicians who get thrown out of office. Part-time legislators.
I agree with the 4th caste.
Although not necessarily caste, here are my top/most privileged jobs in the country:
1. Federal judge. Lifetime appointment. Decent salary. No boss. Extremely powerful.
2. Former President. Lifetime secret service protection. Enormous earning potential through books and speaking fees. Free travel?
3. Tenured professor. (See no. 1). Plus summers off.
4. NFL kicker. Doesn't get hit. Doesn't break a sweat. Plays all of five minutes or less. High six or seven figure salary. Would be no. 1 if not for the stigma.