A little bit discussions about some of the variants:
The latest War Machine look alike figure in SY262 has inverted "100" mark printed on the armor.
I believe it should be "001". but Mark 1 should look like this:
War Machine from SY262 isn't variant. It's War Machine Mk1 (not Iron Man Mk1). It's developed from Iron Man Mk2 suit in Movie Iron Man2.
But War Machine Mk2 from Lego/SY/Decool is another suit's developed from Mk22 Hot Rod. and repaint to Iron Patriot in Movie Iron Man 3. (and Repaint back to War Machine again in Avenger2 Age of Ultron) Repaint War Machine
Mark 41 "Bones"
How about Mark 41, Bones? Some people say the earlier "Mark 41" isn't Bones, so who is he?
Again, thanks to @beekini for the confirmation. It's confirmed both are Mark 41 "Bones":
The other variant of Mark 5 is from EpicLegoDecals' Flickr:
For months i thought this guy is Mark 3. He is actually Mark 49/Mark 50! Thanks to @anonymous for the info.
This guy is from Sheng Yuan's SY161. That is a set of minifigures from Avengers Assemble animated series. Article in http://avengersassemble.wikia.com/wiki/Iron_Man stated that the ironman in this series is Mark 50!