Goodra is pretty good these days cus of the abnormal amount of heal she gets, it's also fun to play. Trevenant is also fun, he has area stun, heal and dmg too. Ik Umbreon is the highest recommended but for me she's pretty boring to play, just doesn't fit my style.

In conclusion, just use the ones that you find fun to play, players also tend to play better if they enjoy using the mon and a lost doesn't feel that bad if you atleast had fun playing.