Transport Canada recommends identifying the aircraft type on initial contact:
Note that the initial "Charlie" (for Canada) is never used in a callsign. When flying a Canadian aircraft in the US, the same callsign is used, prefixed by "Canadian".
In 2017, when I flew down to the uncontrolled Converse County Airport, near Douglas Wyoming, to view the total solar eclipse, a couple of hundred aircraft arrived in the morning or the day before and then departed in the afternoon.
Call signs were very pragmatic - nobody used their registration - it was "Red High Wing", "Blue Low Wing", "Green and White Twin", etc. and it all worked very efficiently.