In the 1980s, the main "knockoff" TV series to Transformers was Challenge of the GoBots (even though it technically came first).
In the late-90s/early 2000s, the main "knockoff" TV series to the Beast Era was DinoZaurs.
And now, Indonesia has created a blatant knockoff Transformers TV series that actually ripoffs several Movieverse character designs, stealing the looks of Megatron, Ironhide, and a bit of Bumblebee. The name of this series translates to "Red Armor Warrior":