What class are Players flying anyway?

[Osprey]

Just as an option there is also the 'Callsign' property (don't know what Maddox call it in code though) and in the RAF this is the codename on the radio for the Squadron (Regiment). ie. It may be possible/easier to group squadrons by the selected callsign instead.

[FG28_Kodiak]

You can store the planes in a List and create your own Airgroup