La Junta have a lot of 5+ damage 2*/3* cards if you're playing for KO, Uppers also have a lot of good high damage 2*/3* cards (Dr Six, Gail Ld, Oxen, Bob Joby, etc). Raptors aren't too bad in the damage department either, with Rage, Rattle, Gum, Gray, Bartholomew - there are others ofc, but these 3 clans (among others) are pretty strong in DT so I'd look at their options first
Heya! As stated by others before, Uppers have some good ones. Most of their 3*s open up a lot of KO options due to their good damage. Had a lot of success with a deck containing Dr Six, Christelle, Al Safra, Oxen, and Sean East. Rubie is also worth considering imo. Also played around with Gheist in the past using ARN 2000, Leviatonn, and Ghenom. Currently trying to build a Montana T1, and there's a few notable ones there being Dr Elisa, Moses, and Lorenzo. though haven't tried it yet so don't take my word for it lol
3* with 5 damage tend to have conditional victories. Nonetheless there’s enough damage provided from 4 damage with abilities or bonuses that increase damage +2. If I were you your base 5 damage isn’t anything important at 3*. Sylvia Ld is a good example of conditions with moderate risk moderate reward.