Do my kids need the same visa as me, or is there a 1 year Single Entry option for them?

When applying for a 1-year multiple entry Non-O visa, it is unlikely that children will receive the same type of visa. Typically, they may be granted a 90-day single entry visa instead. Notably, children under 15 cannot incur charges for overstaying, and children under 18 cannot be banned for overstaying, which could be a factor in your decision.