I checked all 3 ARTCC websites and didn't find any of these preferred routes you speak of. 
Apologies that the info you seek has not been posted.
Flightaware IFR Route Analyzer is a great tool to get current, day of flightplans being used. They will be filed correctly for direction of landing at the destination, as well as appropriate flight levels. This can be found here:
https://flightaware.com/statistics/ifr-route/Just use caution when looking at flightplans, some may show up as this
ATL265028 AEX SKNRD4That ATL265028 is a VOR radial/distance point of which ATC gave a flight direct AEX to join the SKNRD4 arrival.
Instead make sure a flightplan looks like this
KAJIN2 STNGA MHZ AEX GESNR1 As you can see its a complete with the SID/STAR associated with it.
Another note is with ATL and IAH some RNAV STARS are runway configuration dependent such as landing "EAST" or "WEST" As a example if you filed the DOOBI2 arrival into KIAH that arrival is only designed if KIAH is landing to the WEST (26R/L, 27). If your flying into KIAH you need to be aware of this and be ready for a potential re-route by Houston Center because the weather might change. The notes on the bottom of the FAA charts give you a heads up on which RNAV STAR corresponds with the other configuration.
As you can see the NOTE about when landing EAST expect the SKNRD arrival. There will never be a number associated with the arrival on the notes since they don't want to have to change every chart when a new number comes out.
Also just as important these NOTES on the bottom tell you critical information that has to be flown by the pilot. See how it talks about speed restriction? It doesn't show anything on the chart itself about holding 280kts on the descent, but you are required to unless ATC tells you otherwise, or otherwise depicted on the chart.
This was probably a little more then you asked/wanted this morning but just throwing this out there for this particular FNO since these are usually problem areas pilots do not fully understand.
