My list would deffidently be:
1. Marth (For reasions explained above)
2. Ike (Lord in 2 games, recruitable in 1, and in SSBB)
3. Roy (Lord in one game, and in SSBM)
4. Anna (In many games, and she is just plain awesome!)
5. Tiki (Perhaps I am alone on this one, but she is in several games, and is perhaps the most notable of the tribe of dragons)
Elewood and Hector fallow close behind, especially for western players, but for the reasion that they did not stand out nearly as much to those who had FE beforehand, thay didn't make the list.