I think the first one is a birch. We call it paper birch around here. The next two pictures are poplar (or popple). They often look similar but the key differences are that the bark never flakes/peels off of the poplar and the branches and twigs on the birch are much slenderer.
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It looks like the trees on the first pictures contain some sort of trembling aspens (peuplier faux-tremble) or cottonwood (peuplier deltoïde). It doesn't seem to have the peeling bark of white birch (bouleau blanc) or even yellow birch (bouleau jaune).
Where I live in Quebec, popular can sometimes look like yellow birch from a distance. If you can takes some more pictures up close, you will be easier able to study the bark and then compare them with some tree identification websites or books.
If it is not urgent to know what you have till the leave come out, then wait till spring as it will be easier to identify by comparing the leaves. It is always harder to identify certain trees in the winter.