There is no official definition of extrasolar planets.
In 2003, the International Astronomical Union (IAU) Working Group on Extrasolar Planets issued a position statement, but this position statement was never proposed as an official IAU resolution and was never voted on by IAU members. The positions statement incorporates the following guidelines, mostly focused upon the boundary between planets and brown dwarfs.
No official definition of extrasolar planets/exoplanets.
You know why this is?
They do not understand stellar evolution/planet formation. That's why they keep on going to the nebular hypothesis/formation and evolution of the solar system pages.
They are stuck in the mud.
None of it is going to make sense to them because they are keeping a false assumption as fact. They believe a "star" is something mutually exclusive of "planet". So, they force everything to fit that, and then get confused as to why none of their theory is working!
Like chaining yourself to a wall, and then wondering why you can't move away from the wall!
Or setting the emergency brake on your car and then wondering why your car is going slow!