These are the same three mice in photos which to me seem more telling. To me it seems pretty clear that the first one should be Wood and the other two YNM, because the breast patterns look visibly different.
What would you look at regarding the tail, length? That seems to overlap - even though a very long-tailed individual would be quite surely YNM, for a lot of them it doesn't seem very useful, if the published ranges for length are correct.
Some time ago, there was a discussion about apodemus mice ID and some claimed that you can ID Wood from Yellow-necked even without seeing the neck.
I realize that this theory can be put to an interesting test by showing you photos of mice where we reasonably think we know what it is (thanks to...