The descriptions for targeting AI in FEBuilder are inaccurate. Here are more accurate descriptions:
00=Soldier/Commander
08=Agressive
10=Jaffar
18=Support
20=Damage
28=FE6 Archers
30=?
38=?
It appears that the current descriptions are based upon a post I made here.
After doing further research I found the proper AI targeting behaviors which I lay out in detail here:
The Official AI Documentation Thread.
I recommend to glance over this post if you have any questions about the targeting behaviors.