How many "Steam Along" Thomas variations?

So I am repairing some trains for a fellow member and learned something but then had some additional questions.

I knew of the Metalic version of the Steam Along Thomas and I was aware of the Japanese version which was non metalic, but I did not realize there is also a white deck Metalic version as well which is a Japanese release I believe.

Excluding the new TMR and the new Plarail release, are there others?

Are you sure it is factory?
Could it be the white deck from the nonmetallic version, with the metallic Thomas upper half and shell?
Yes there is another slight variation that exists though...
Seems like at the time of the Tomy to HitToys transition some of them were released without red boiler stripes.