Just to add... many years ago the FAA lumped several different a/c models into the same pilot type rating. Learjet got away with this early on. The Lear 55 type rating is the same rating as the much different Lear 20 series and Lear 30 series type ratings so you might find most guys claiming to be Lear 55 “rated” have never actually flown a Lear 55. Just a heads up.