Um. Most if not all of that list is Federal. Which supercedes everything, anyways. Whether states like it or not.
The fact of the matter remains, in an at will state, you can be shown the door without any reason.
If challenged, any reason, within the law will suffice.
Former disgruntled employee: "They fired me cuz I'm a divorced, transgender, pregnant, multiracial, wounded veteran, Devil worshiper with a lazy eye. Hail Satan!"
Former employer: "Nope, things just weren't working out. And one minute late to work a week or so ago, too. See the time card? Not that I needed to prove that, anyways."
End of story. Unless lawyers get involved and discrimination can be proven. And then I will want to marry that lunatic. Cuz he/she/it is gonna be rich!