In our whirlwind of owning I've missed screenshots on several bosses. So far we have cleared...

Flame Leviathan
Razorscale
Ignis
Deconstructor
Assembly of Iron
Kologarn
Auriaya
Hodir

...all on Heroic. Our 10 man group is slightly ahead having Thorim and Freya added to that list. Here's some new screenshots though!