Actually 422 is a wobler and can be a misdemeanor as well, so its not just the low/mid/upper terms of prison, this can stay county. Often these are charged as or even dropped to a misdemeanor.
Parole is what is granted after a term in Prison and is part of sentencing...
I think you are asking is if there is a chance of probation and avoiding prison. There is usually a big chance of probation, especially "wobbler" crimes, but it would be impossible to guess. Many factors, including local factors, play into that.
166 usually has to do with a restraining order.
Reading your charges it looks like he accused of threatening/terrorizing someone who has a restraining order against him?
If I were a betting person, that will not likely result in Prison time initially... presuming he is not on parole/probation or otherwise have stuff hanging over him. He could be very well on the road to prison though.