I'd say these are pretty accurate from my mediocre experience with Sheeva, Kung Lao, Mileena, Kitana, Smoke, Sektor, Cyrax are all pretty bad matches, I'm almost thinking Noob is as bad or maybe worse than 4-6,
Noob also seems really bad to me, his upshadows stop telestomps easily as well as his teleslam can be done on reaction to grab you out of the air . He can seemingly stay out of range of her ex bf3 and ex low grab by just spamming upshadow because he leans low and back but maybe online is just playing tricks on my perception.
I'm not sure if upshadow goes under her fireball because it goes under a few characters but hers is pretty low. Either way I tried her fireball and got teleslammed on reaction every time because the recovery is so slow. Even b2 can't seem to reach him when he's doing upshadow. I have as little answers for him as Mileena or Kung Lao it seems.
As you mentioned earlier too. Kenshi doesn't seem like that bad of a match up for her, I actually find it an easier win with Sheeva than Sonya, Jax, or Cage against him