What a shameless fellow you are? Than why it is missing in above list? What about your claim of US recognizing it as 4.5 generation?
Pl read the following list of 4th generation Plane from same link.
Fourth generation jet fighters (1970 to late 1980s)
Through the 1970s and 80s the trend of improvement in avionics such as head-up displays and optimised aerodynamic design continued with the development of fly by wire fighters such as the MiG-29, Su-27, F/A-18, F-15, F-16, and Mirage-2000. Most of this generation of fighters had the ability to both switch and swing roles between air-to-air and air-to-ground, as opposed to the previous role-dedicated aircraft. This in turn blurred the distinction between control of the air and strike missions.
J 11 is not there in 4th generation plane even.