SHARED NAMES:
G1 Optimus Prime (1984)
G1 PM Optimus Prime (1988)
G1 AM Optimus Prime (1990)
G2 Optimus Prime (1992)
G2 Hero Optimus Prime (1994)
G2 Laser Optimus Prime (1995)
G2 Go-Bot Optimus Prime (1995)
MW Optimus Prime (1997)
RiD Optimus Prime (2001)
HoC Optimus Prime (2001)
HoC PM Optimus Prime (2001)
HoC PM Spark Optimus Prime (2001)
HoC Axe Optimus Prime (2001)
RiD Spychanger Optimus Prime (2002)
Happy Meal Optimus Prime (2002)
Armada Super-Con Optimus Prime (2002)
Armada Optimus Prime (2002)
CS II PM Optimus Prime w/ Apex Bomber (2002)
Universe Optimus Prime (2003)
Armada Powerlinx Optimus Prime (2003)
Giftset Powerlinx Optimus Prime (2003)
Spychanger Optimus Prime (2004)
Universe Spychanger Optimus Prime (2004)
WSTF Anime Optimus Prime (2004 - Japan)
WSTF Optimus Prime (2004 - Japan)
WSTF white Optimus Prime (2004 - Japan)
Energon Optimus Prime (2004)
20th Anniversary Optimus Prime (2004)
HoC Optimus Prime w/ communicator (2004)
TRU Energon Optimus Prime (2004)

In Japan, Optimus Prime was named Convoy

shared prefix:
BW Optimus Primal (1995)
BW Ultra Optimus Primal (1996)
Transmetal Optimus Primal (1997)
BM Optimus Primal (2000)
Happy Meal Optimus Primal (2000)
Blast Punch Optimus Primal (2001)
RiD Optimus Primal (2002)
Universe Optimus Primal (2003)

Transmetal Optimal Optimus (1998)

Transmetal 2 Optimus Minor (1999)

shared suffix:
G1 Rodimus Prime (1986)
HoC Rodimus Prime (2003)
CS VII Rodimus Prime (2004)

Transmetal Primal Prime (2000)

RiD Omega Prime (2001)
Universe Omega Prime (2003)

Armada Nemesis Prime (2003)
Universe Nemesis Prime (2004)

Cybertron Vector Prime (2005)