According to Archer TM2s are indeed his designs and Beast Machines continues their theme in an even more extremem manner as by that time Archer had been given authority over the franchise.

You can tell by the TM2 designs that they were preparing their agenda to abandon the whole robot concept and move into Technorganics which they sadly did in BM with abismal results. The franchise was in serious danger after that as it totally annihalated the G1 continuity and alienated many fans as Transformers were no longer robots of any kind. The franchise had not been in such a bad state since the end of G1 until the Japanese rescued it with RID.

I am still surprized that Archer wasn't fired on the spot after such a failure in his first term in office.