None will be lost over misinterpretation. Those who are lost will be lost because they rejected the truth as it was presented to them as it was made available at the time. We are required to live according to the light given at the time.
First, 99% of Christians won't be lost for not keeping the sabbath. So rest easy on that. Second, the ten commandmenst detail how we are to love God and love our neighbor. When Christ said "Love the Lord your God." that covered 1-4. When he said "Love your neighbor" that covered 5-10.
Figure also that out of the ten, the 4th is the only one that says "Remeber". That alone should be reason enough for us to not forget it.
Well hopefully this straightened out that for you
The truth of the matter is that everyone who is lost will be lost because they remained in rebellion against God. No one can speak for anyone else, but we can say that the Lord works to lead His children into light on an individual basis.
For example, I bet there will be slave owners in heaven who never learned that owning slaves were wrong, but loved God will all of their heart, while there will be those who professed a love for God, but rejected the idea that owning slaves was wrong. The latter of the two class would be excluded from glory because of their unwillingness to walk in the light being presented to them.
There will be people in heaven who never understood the truth about the sabbath, but walked in the light they had, while others who had the truth laid out to them, but rejected it because of the hardness of their hearts, will be excluded.