1) Mobility
2) Mids
3) Fast normals
4) Counterzoning
5) Safety
1) Command grabs
2) Damage
Mids is a bit subjective though. I personally look for good buttons in general that tick a lot of boxes more so than strictly if it's a mid or not, they just happen to also be mids lol.
Damage may also be disputed in the respect that I don't care if a character does big damage but I still like to have at least 1 full combo option meterless. You definitely would see me play someone like Commando Kano or Lackey F/T