Curious History of Third Party Transformersさんのイラストまとめ

There was a very shortlived discussion at MMC about retooling Leo Dux into a Lio Convoy and making a Stealth Bomber Megatron, that could combine to make a TF styled Gaogaigar, it was abandoned because there would have been too many compromises/costs.
Early basic proof of concept.

GCreation Typotron, ironically not a typo, sadly unreleased.

Perhaps they didn't want sales to be split between GT Tyrant.

Soundwave

Hearts of Steel Cyclops / Shockwave creates Stalin, Hitler, and other historic bastards to spread terror, hatred and war to speed up humanity's technological advancements to make Earth a better home for Cybertronians