Jahfree Neema was convicted of kidnapping in the second degree for taking his daughter to prevent her mother from leaving the country with her. However New York law states that a parent (who doesn't have legal custody) abducting a child just to gain control of them is not guilty of kidnapping. They are instead guilty of the much lesser crime of custodial interference, the difference being kidnapping in the second degree is a class B felony (5-25 year sentence), whereas custodial interference in the second degree is a class A misdemeanor (one year jail time max) and custodial interference in the first degree is a class E felony (1-4 year sentence). Custodial interference becomes first degree if the child is either taken across state lines or is put in circumstances that puts the child's safety or health at risk.
For killing Said, Lemuel Idzik is convicted of murder in the second degree and sentenced to life in prison, without the possibility of parole; which is not a possible sentence for murder two. In the state of New York (where Oz takes place) the maximum sentence allowed by law for murder in the second degree is life in prison with the possibility of parole after 25 years; in fact no state has that sentence for murder two. In New York only murder in the first degree and aggravated murder have a sentence of life without the possibility of parole. Aggravated murder also potentially carried the death penalty at the time, but New York repealed the death penalty on June 24, 2004.
Warden Glenn tells Lionel Kelsch that him distracting the guard so that Mayor Loewen could be killed makes him guilty of murder, and that he's going to death row. Which isn't correct, what Kelsch did makes him guilty of being an accessory before the fact to murder. This can potentially get him a life sentence, but as he didn't actively participate in the murder itself he wouldn't be subject to the death penalty.