My turn.

All Primes, and all Convoys.

Note that

Italicized Convoys are ones that were NOT Primes in the English versions.

And that this list only contains leaders who are specifically Primes/Convoys, excluding any leaders who weren't Primes/Convoys.

And those with "**" represent different-named versions of the same guy directly above them.

Generation 1-2 Marvel Comics:

* Prima

* Prime Nova

* Sentinel Prime

* Optimus Prime

* Rodimus Prime (various alternate future timelines)

* Modus Prime (Classics splinter timeline)

Generation 1 cartoon:

* "Ancient Robot" (retroactively, and retroactively named "Primon, the Aplha Prime")

* "Powerful Robot" (retroactively, and retroactively named "Prima")

* "Brooding Robot" (retroactively, and retroactively named "Prime Nova A.K.A. Nove Prime")

* "Pre-Transformer" (retroactively, and retroactively named "Guardian Prime")

* "New Narrator" (retroactively, and retroactively named "Zeta Prime")

* "U-Haul Robot" (retroactiely, and retroactively named "Sentinel Prime")

* Optimus Prime

** Powermaster Optimus Prime

* Rodimus Prime

Japanese Generation 1 cartoons and related media:

* Convoy

** Star Convoy

** Super Convoy (Nucleon Quest)

** Convoy (G-2)

** Battle Convoy

** G1 Convoy Black Version

* Rodimus Convoy

* Fire Convoy

** Super Fire Convoy

** God Fire Convoy

*

Black Convoy* Reverse Convoy

* Convoy (Kiss Players)

* Nise Convoy

* Pepsi Convoy

* Black Rodimus Convoy

Beast Era cartoons and related media* Optimus Prime

* Primon

* Prima

* Prime Nova

* Sentinel Prime

* Rodimus Prime

* Primal Prime

* Lio Convoy

** Leo Prime

* Big Convoy

* "Joe Convoy" (false name)

Japanese Beast Era:

*

Convoy**

Convobat**

Burning Convoy**

Metals Convoy**

Powered Convoy**

Convoy (Beast Wars Returns)

**

Beast Convoy**

Burning Beast Convoy* Lio Convoy

** Great Lio Convoy

** Leo Prime

* Black Lio Convoy

* Big Convoy

* Black Big Convoy

* Great Convoy

* Unnamed Convoy Council member

* Unnamed Convoy Council member

* Crow Convoy

* Break (BW Neo manga, after earning the rank in the final chapter)

* Cohrada (BW Neo manga, after earning the rank in the final chapter)

* Longrack (BW Neo manga, after earning the rank in the final chapter)

* Stampy (BW Neo manga, after earning the rank in the final chapter)

* Many of Longrack's ancestors (BW Neo manga)

* Star Upper (claimed to hold the rank of "Hyper Convoy Brilliant Special 98", twas a lie)

* Logos Prime

Robots in Disguise:

* Optimus Prime

** Omega Prime

Generation 1 Dreamwave comics:

* Alpha Prime

* Guardian Prime

* Sentinel Prime

* Optimus Prime

* Rodimus Prime (strangely)

Unicron Trilogy:

* Optimus Prime

** Jet Convoy/Jet Optimus/Jet Prime (the combined form of Optimus and Jetfire)

** The combined form of Optimus and Overload

** The combined form of the above two combined forms

** The combined forms of Optimus and Wing Saber (Energon)

** Optimus Supreme

** Optimus Prime Savage Claw Mode

** Optimus Prime Sonic Wing Mode

* Nemesis Prime

* Vector Prime

Micron Trilogy:

* Convoy

** Jet Convoy

** Magna Convoy

** Magna Jet Convoy

** Convoy Final Battle Coloration

** Grand Convoy

** Wing Convoy

** Omega Convoy

**/* Galaxy Convoy (debatable if he's the same guy as the above or not)

** Liger Convoy

** Sonic Convoy

*

Prime (Armada Sparkplug's Japanese name)

*

Rodimus Convoy* Vector Prime

*

Nitro Convoy*

Flame Convoy*

Live Convoy*

Megalo ConvoyUniverse (2003):

* Nemesis Prime

* Spychanger Optimus Prime

Alternators:

* Nemesis Prime

Binaltech and Alternity:

* Convoy

** Convoy Ultimate Silver

* Convoy Vibrant Red

* Convoy Super Black

Masterpiece:

* Convoy

* Rodimus Convoy

* Black Convoy

* Black Rodimus Convoy

Generation 1 Devil's Due "G.I. Joe vs. the Transformers" comics:

* Optimus Prime

* Serpentor Prime

Generation 1 IDW comics:

* Unknown

* Unknown

* Nova Prime

** Nemesis Prime

* Nominus Prime

* Sentinel Prime

* Zeta Prime

* Optimus Prime

* "Rodimus Prime" (not official, just a temporary nickname)

Movieverse:

* The Fallen

* Prima

* 5 or 11 other Primes

* Sentinel Prime

* Optimus Prime

* Bendy-Bus Prime

* Darkside Optimus Prime

* Nemesis Prime

Animated:

* Ultra Prime (former, promoted to "Ultra Magnus")

* Fire Prime

* Big Bang Prime

* Override Prime

* Rodimus Prime

* Sentinel Prime (former, promoted to "Sentinel Magnus")

* Longarm Prime

* Optimus Prime

** Wingblade Optimus Prime

* "Beeimus Prime" (false name)

* Nemesis Prime

* Shattered Glass Optimus Prime

Universe (2008):

* Nemesis Prime

TransTech:

* Optimus Prime

Shattered Glass:

* Optimus Prime

* Rodimus Prime (self-appointed)

Henkei! Henkei!:

* Convoy

United:

* Optimus Prime

** Optimus Prime Cybertron Mode

** Laser Optimus Prime

** Black Optimus Prime

* Rodimus Prime

* Darkside Optimus Prime

Original Thirteen Primes (Multiverse):

* Prima

* The Fallen

* Vector Prime

* Nexus Prime

* Logos Prime

** Soundblaster

* Eight others

Original Thirteen Primes (Aligned):

* Prima

* Vector Prime

* Alpha Trion

* Solus Prime

* Micronus Prime

* Alchemist Prime

* Nexus Prime

* Onyx Prime

* Amalgamous Prime

* Quintus Prime

* Liege Maximo

* Megatronus

** The Fallen

* "

Thirteen"

Optimus Prime Aligned Continuity:

* The above Aligned Thirteen

* Sentinel Zeta Prime

* Optimus Prime

* "Nemesis Prime" (a non-living, man-made, remote-controlled robot doppelganger of Optimus)

Japanese version of the Aligned continuity* Optimus Prime

** Shining Optimus Prime

** Dark Guard Optimus Prime

** The combined form of Optimus and Gaia Unicron

** Hunter Optimus Prime

** Optimus ExPrime

* "Nemesis Prime" (the same man-made doppelganger from the English version)

** The combined form of Nemesis Prime and Nightmare Unicron (debatable since Nemesis isn't actually his own person)

* Leo Prime (same guy as the Japanese Beast Era character)

* Go Prime

* Hunter Nemesis Prime

The Cybertron Satellite Town Commanders:

* Akiba Prime

* Fukutsu Prime

* Ginza Prime

* Ikebukuro Prime

* Itami Prime

* Kawasaki Prime

* Mito Prime

* Nagoya Prime

* Saitama Prime

* Sapporo Prime

* Sendai Prime

* Tachikawa Prime

* Umeda Prime

* Yokohama Prime

* Daimicron Prime

* Hakata Prime

* Hiroshima Prime

* Ishinomaki Prime

* Yūrakuchō Prime

Kre-O:

* Optimus Prime

* Sentinel Prime

* Nemesis Prime

Bot Shots:

* Optimus Prime

* Sentinel Prime

* Nemesis Prime

Cap Bots:

* Captimus Prime

GT:

* GT-R Prime

* Safety Prime

Transformers × Evangelion* Convoy

** Convoy Mode "EVA"

IDW "Transformers vs. G.I. Joe" comics:

* Optimus Prime

Transformers Cloud:

* Optimus Prime

Angry Bird Transformers:

* Optimus Prime

* Sentinel Prime

And... I think that's it (without just further deviations of the same characters from more obscure mediums like the G1 books, the Beast Era manga, the Galaxy Force manga, etc.).