Those used an older naming scheme and dont refer to the torque rating.

700R4 is the 4L60 wich is the hydraulic version of the 4L60E. E is for electronic. There were updates almost yearly but there really is nothing that seperates the two. At work they all get refered to as 4L60'*

The 200 is a light duty 4 speed used in RWD G bodies. It can be thought of as a smaller 60 but is pretty much 100% different.

350 and 400 are hydraulic 3 speed tranies used from the 60'* through the 70'*.

Typicaly the 400 is stronger and the 350 is lighter and more fuel efficient.

4T40/ 4T40E is used in cavaliers.

THM stands for turbo hydramatic. Hydramatic is the division of GM responsible for transmission'* and drive trains.

GM also re badges other tranies as thier own.
The 4L30E is used in isuzu rodeos honda passports and the cadilac catara.

I dont work with FWD units but I know they rebadged toyota units used in the corola/nova/prism.

Chevy even has a part # for a version of the engine in my mazda wich was developed with suzuki wich was bought by gm.