I fly for a corporate, and we DO have rigid SOP... we DO have line checks, oh and guess what, we do have OMB...funny to read this comments. And most of our pilots move eventually to airlines without any problems at all. The other way is a bit more complicated. A few of them , who passed Wizzair, are crying out to come back with us haha... not a chance for them, we don't hire anyway.
CRM is VERY important in corporate where you spend several days together. In an airline, flying with an a**h***, is ok, you can put him on black list or if you are lucky enouch (big "factory"), you will probably not fly with him again in the next few months.
anyway, the most important is to have a seat , the rest is about litterature