DailyHive have a piece about YVR's remote stand operation:
http://dailyhive.com/vancouver/vancouver-international-airport-yvr-remote-stands-2018
The article states there are 4 flights that uses the remote stand, but so far I've only seen 3... JL (NRT), UA (LAX) regularly, and occasionally TS with no gate assigned for arrival.
Tomorrow will be interesting though, due to IRROP caused by Typhoon Maria. Tororrow's CI departure to TPE will be delayed 6hr to 9:20am in the morning while arrival will be 6hr
early at 1:00pm (taking additional gate during the peak hours). Regular BR flight is currently 'cancelled' and the new time for the replacement flight (BR9D and BR10D) had not been announced... Seems like the BR plane will move to remote parking area after tonight's arrival, and if BR9D is to depart in early afternoon, it will most likely use the remote stand (and probably not D59 if the departure time is close enough to the JL flight?)