Sorry I think you may be missing my point - it’s not about the specific data sources, it’s about showing more than 2 on a graph. The image above shows 3. It looks like there’s 1.5 days of HRRR followed by 1.5 days of NAM followed by about 2 days of GFS. I’m not sure whether this is possible to do in the current version of the app even if you have Gold subscription?
In my case I was enquiring whether I could configure my 10 day graph to have ARPEGE, ICON Global and NOAA GFS on the same graph.
ARPEGE has 2.5 days forecast (use this for day 0 to 2.5)
ICON Global has 5 days forecast (use this for day 2.5 to day 5)
GFS has over 10 days forecast (use this for day 5 to day 10)
Hope this helps to explain (a bit) better.