VOC are the solvents that escape during painting. Unfortunate the numbers vary on all painting cans and paint products so it is difficult to so if they are low VOC or not.
Diamond Vogel has a product that is call Zero Plus that has Zero VOC!!
Sherwin Williams has a zero VOC paint call ProMar 200 Zero VOC
After looking at the material data sheet you will find that there are still solvents in the paint no matter what the rating
The best recommendation is that proper ventilation no matter what paint you are using.