>>49907756
https://ylvapedia.wiki/wiki/Elin:DNA_List
https://ylvapedia.wiki/wiki/Elin:Spells
For better combat AI, you should get those braincells from Little Garden.
For ranged/caster allies, try aiming for the Rapid Cast or Rapid Arrow feats. Arrow Spells are very nice to have on casters. Sword Spells are nice on Warmages since they also scale with Longsword Skill.
Healing Instinct is nice to have on your healer.
Taunt/Wall of Flesh for a tank. (Personally, I just use Y'molonac, which already has WoF5 as his default feat.)
Fast learner is good for your baby ally since you can just get the gene later(better feat gain just means it's faster to level up)
The best way to get a gene on a specified monster/NPC is at level 50 alchemy, when you can craft Elixir of Gene. A blessed Elixir of Gene will give you a yellow gene. I personally just savescum to get the one that has multiple feats, spells, and body parts