I taught I taw a puddy tat....
Stingray, I had a very similar shaking myself last fall. It would shake at highway speeds and when I applied the brakes the shaking increased noticably. I had done all the things you did but it did not solve the problem. I finally decided that the front struts must be the problem. I replaced both front struts, tension struts, sway bar bushings and had it aligned and she has been shake free ever since. Once you try the sway bar bushings, you might consider new front struts. I know it is a little costly but it solved my shake.