Genghis
The G V is a Part 25 plane, as are all business jets over 12,500, so no biz jet OEM is getting around FAR 25. Both Gulfstream and Bombardier AR selling north of 50 long-range business per year, EACH. There are over 400 Global Expresses, all FAR 25 certified. There is no 19 versus 20 seat distinction in FAR 25.
On point, the G8000, in development will be a 7900 nm plane which translates into 17+15, take-off to landing. Marketing press releases talk about HKG-NYC, non-stop.