These are at least some of them
Silver Centurion: This armor was built by persuasion of Hawkeye the leader of the "West Cost Avengers" back then. Anthony dons the armor after his buddy "Morly Erwin" dies by a gift package from "Obidiah Stane" to there dome of "Circuits Maximus"
Under-Sea Armor: Searching for a canister of gas among the rubble of the long wrecked ship "TITANIC"; "Iron Man" dons this armor to be able to hold in a very deep with high pressure ocean.
During the Stark wars the "Silver Centurion" was destroyed, this is a much more powerful armor that helped Tony defeat the rogue that destroyed his previous armor
The most famous armor donned by "Iron Man" the longest time
Modular Armor: Created in "Invincible Iron Man #300". This is the armor that got animated in the 90s Marvel cartoons and Capcom video games
Remote Controlled Armor
Space armor II