If you're talking purely battle stats and G1 era, then Ramjet kicks every ones ass except for Starscream.
I always thought the Seekers (except Starscream) were boring. They were just a couple of knuckeheads that argued with eachother and were just Starscream's and Megatron's b-otches.
The Cone Heads were much more hands-on and important in the original cartoon. But the new breed, Cyclonus, Scourge and the Sweeps were even more superior on paper. More elite. More deadly. Well, at least they were supposed to be.
All the others on your list are just probably comic characters to fill the transformers colour rainbow. They're cool in concept, but I prefer to follow the G1 show and the '86 movie.
http://www.ntfa.net/ntfa/techspecs/i...PZ&char=Ramjet