Re: XC60 Equipment (cdsiniS60R)
The US delivery models also presently offer fewer cosmetic options (paint colors, no option for "Classic Wood" trim). Apparently these are available for US-spec cars via OSD, so you should also have access to them if you're taking delivery in Sweden or Germany. The 19" wheels cannot be ordered except as an outright accessory for a huge price; I think that situation is the same in US and Europe.
Regarding suspension, it seems the 4C is no longer available on US-spec cars at all, but you could ask. It may also be true that the non-4C suspension tuning is different; I've read a few references to the US cars having softer suspension with a minor, but noticeable, degradation of handling.
Aside from the diesel engines (and manual transmissions) that you noted, I'm not aware of any other significant hardware that is unavailable on US cars. If you get Nav, you might want to ensure that you get both Europe and USA maps. Unfortunately, the Nav (which I didn't really want) is bundled with the upgraded audio system in the USA; you might be able to separate them.