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The Modern Armors as documented in Iron Man Vol. 3.  Model XVIII, Mark I, sometimes referred to as the Heroes Return Armor or the Renaissance Armor.
The Model XX, Mark III, vol 3, #50. S.K.I.N. - Synth-Kinetic Interfacing Nanofluid. It came out of his chest device as basically an under shell of flexible but strong armor. 
The Model XIX, Mark II, the Safe Armor as seen in IM vol 3 #15.
I came to find out this armor's electromagnetic fields were not allowing me to heal and was actually causing cellular degeneration.
The Model XIX, Mark I, the Safe Armor-prototype as seen in Fantastic Four vol 3, #15 and Iron Man vol 3, #14.
The Model XX, Mark I., SKIN armor developed by Askew, also sometimes referred to as the Udder armor, started in IM vol 3 #42, Mark I #44. The golden shell stronger than Omnium Steel and nearly as strong as Adamatium.  This is when Tony gave up his fortune and went to work at Askew electronics as Hogan Potts basically giving up his identity as well. He began to work on a new armor with the foundation being the S.K.I.N. armor from the chest piece. Synth-Kinetic Interfacing Nanofluid.
The Model XX, Mark III or IV. It was drawn completely different by the artist - in Iron Man V3 - 49 and then a new team in 50 - Grell/Ryan
The Model XIX, Mark II, the Safe Armor as seen in Contest of Champions II.
The armor was putting off energy fields destroying Stark's tissues seen in Vol. 3 issue 12.  Changes had to be made. 
Stark's flying car as seen in Vol. 3 issue 8 and lifting a generator. 
Iron Man lifting a military vehicle and going underwater. 
The Model XX, Mark III Bob Layton drew this armor in a Captain America issue where Iron Man paid tribute to the fallen Bucky Barnes.