starscream is some brains some brawn thundercracker is brains skywarp is brawn not sure about coneheads or "storm" seekers
G1 - Jetfire since he bested Megatron. ANIMATED - Starscream, as their leader. Bay FILMS - Jetfire (but then he was the only one seen). PRIME - Dreadwing (since he survived for so long)
I always thought Slipstream was better than Starscream in Animated. It's like Blackarachnia to Tarantulas, Slipstream was the schemer and 'in it for herself' character.
I think that starscream is probably the most powerful decepticon "flyer" overall. At least out of the seekers, cone heads, blast off/vortex etc.. In terms of G1 that is. In Animated it can be argued, but I still believe him to be the strongest in that series.
Sunstorm is pretty mean. I believe he was a major villain at one point, but I can't remember when and who stopped him. Might have been Dreamwave, not entirely sure.
May not affect other continuity, but still is a decent representation of a little-known character. Well, little-known unless you are a dedicated fan.