The putting on a light in baby's room is bizzare and awful.
Other than that, personally, I don't think he's in the wrong as such, though he could do things quieter. Shower with the door shut, close doors etc.
But, him coming in late can't be helped - it's work. Equally, your toddler getting you up at 5am can't be helped. I wonder how the noise from the Op (and more crucially toddler) at 5am compares to the husband at 1am.
Does the Op go into the kitchen, sit on chairs, make a cuppa? Does she flush the toilet? Or (in winter) does she sit in the dark and silence with her toddler, or take them straight out to the park, so as not to disturb the sleeping husband.
I don't think it's reasonable that she creeps around early morning, but equally, he should be able to unwind a little after work, eat some food etc.
This is the sort of situation which can easily descend into each person being less considerate, because the other person is being, rather than both trying to work out how not to disturb each other.