What are all the professional exams? How would they be ranked in terms of most difficult to easiest?

Patrick M: What are all the professional exams? How would they be ranked in terms of most difficult to easiest?
I am trying to discover what the most difficult professional exams are and which ones are the hardest. Some examples include the BAR exam, CPA exam, CFA exam. I would even be happy to have the LSAT and MCAT included, as I never took them.

Answers and Views:

Answer by conshy3
I think it would be difficult to rank as most professional exams require different skillsets. I know an individual that passed both the BAR and the CPA exam, but could not get through the Actuarial exams earlier in his career.

Based on experience, I would have to put the Actuarial (SOA/CAS) exams up there in terms of difficulty