Even though TIM starts before IM2 and ends after it, I still put it after IM2 simply because of Stark's scene at the end, which is of course after he becomes a consultant for SHIELD. And even though Cap is mostly set in the 1940s, I watch it last because the post-credits scene in
Thor sets up the tesseract in Cap.
So when I do my own rewatch, my viewing order will be IM1>IM2>TIH>Thor>Cap.