As you can see, these are very far off. The in-game version is extremely outdated, as I think the ramps were changed irl like 7-10 years ago.
Also, next to the leftmost gate, as seen in the real-life picture, there is also a separate ramp. It’s used for the Knicks and Rangers’ charter planes (they use Delta B757s). It’d be cool if this could be in the game too.
There are multiple reasons this may be the case, one being that the imagery, at the time, was not up-to-date with what you’re currently seeing.
Airport editors are always adding and editing new/existing airports. KHPN is one of the older airports, updated more than a year ago. An editor may choose to redo the airport in due course. Until then, your feedback has been noted. Thank you!
