Well what you have is 2 kinds of lying. The LCC/Major which are the same thing except for LCC has more domestic flights and probably pay is lower because you only fly 1 or 2 types of aircraft. Major, you just have more types of flying, int. dom. and you have more aircraft to fly.

The other kind is Fractional execjet/netjets/flexjet those aren't charter airlines. Basically it's kind of like corporate flying except you will know your schedule ahead of time, not the destinations, just days your going to be flying. The big difference is that you are expected to be more involved in planning and executing a flight, you have to file flight plans and double check everything, not as lazy ops as the airlines where everybody else does the work for you and you just fly. You are required to fly to pretty much any airport that the customer demands. Also you have to interact witht the customers. Right now fractionals are booming, this is the way many pilots are going because there is a lot of job security at the fractionals and pay is way better than regional or some major carriers.