The Controller Pilot Glossary Chart has Three Spots for us:
(Part of the Pilot and Controller Glossary). Available at: http://www.faa.gov/air_traffic/publications/media/pcg_4-03-14.pdf
We are a Grumman AA1, AA5, or GA7.
Basic radio call format:
Who you are calling (Miami Center)
Who You are (Grumman N1234) – (no type needed unless asked “Say Type”)
Where you are (30 nm east at 10K)
What you Want (Transition Airspace SE to NW)
Other distinctions are lost.
FYI
Roscoe