I wonder if its possible to have a list in this game, but im not very optimistic.
Today I've had 3 straight losses with BOTh of my two brutes, that sucked as all my opponents seemed very dangerous with stuff like the flail or a wolf or vandalisme and choc that neutralised my weapons.
If someone knows a list of weak opponents... (Or opponents to avoid!) I think we will make us all a favour

not that it is not a good idea, it is indeed good, but if your brutes are training in a higher rank like RichterThumper or more, it is completly pointless, because all the brutes there are the best there is right now. and every day goes by they grow stronger with more dangerous Skills and weapons. so finding a weak Apponen wont help,
what realy helps is finding a path in your brutes destiny that can defeat these kind of Monsters which has no garantee either