Pre-Registration System:

Falco Aesalon - Falcon

Cliodna - Seabird

Morrigan - Crow

Morgan le Fay - Bird

Lisette de Lapin - White Rabbit


Post-Registration system (there are more but I dont know):

Minerva McGonagall - Tabby Cat (Registered)

James Potter - Stag (Unregistered)

Sirius Black - Black Dog (Unregistered)

Peter Petigrew - Rat (Unregistered)

Rita Skeeter - Blue Beetle (Unregistered)

Talbott Winger - Eagle (Unregistered)