Thanks for all the suggestions. I did check the door panel, drove with it off. The sound is definitely coming from either under the dash which I doubt or suspension part. I am thinking maybe the sway bar frame mount bushing.
I have new ones on order.
Funny thing is we just got out cold weather ( Florida) and this morning it did not rattle as much. I think maybe the rubber ( if that is the problem) tightens up due to the weather reducing the rattle.
My thought is if I have to pull the sway bar to test this, I might as well replace it with new Poly bushings.
If this is not the issue, I might just give up and take it to a dealer.