This is to keep track of mechs Ironhide's mentioned that didn't appear in the 2007 live-action movie. Will be edited further as various mechs get mentioned.
Perceptor, Sunstreaker, Sideswipe - Went off down the Galactic arm in search of what they thought were Allspark energy traces. Perceptor still a scientist, Sunny and Swipes still twins. No mention of their alt forms. Perceptor was 'one of our best scientists' and was not at Tyger Pax. Sunny and Swipes were infiltrators.
Mainframe: Extremely dangerous Decepticon rendered inoperative at the Battle of Tyger Pax. Essentially the adversary in the Rise of the Chevy Autobots web game, without the elements that contradicted movie canon.
The first thirteen: Ironhide doesn't know the names of the first thirteen mechs supposedly created by the Allspark upon its arrival, but he does know that's how many were in the first generation. Also that as soon as there was a first generation, 'there was trouble', although what manner of trouble hasn't been specified.
The Quintessons: These are a standard horror story told to scare new incepts. Hide does not believe in them.
Wheeljack: Described as enthusiastic. Used as a comparison for Ratchet when the medic is faced with a new challenge. Assumption is that it's fundamentally the same mech as in the G1 universe. Esp. since Ace's behavior post-demon bunny incineration is compared to Wheeljack's. 'hide refers to Wheeljack as 'an old buddy of mine' when making that comparison.
Dinobots: Mentioned, but not described or named.
autocommander has precedence when it comes to determining whether they exist, how they exist, and what their forms/origin are in the movieverse.
'this or that mutant Spark that refused to join with Primus again after death' - See Quintessons.
Kup - Ironhide refers to Kup as having been his mentor, and remembering stories that other mechs had forgotten (or at least allowed to cycle so far back into storage that they didn't bother retrieving them any more). Probably present at Ironhide's inception, too.
Mechs who could carry two sparks at once, because they had to retrieve or temporarily carry someone else's spark for a while - stories for 'sparklings'. As Ironhide normally uses the phrase 'new incepts' to describe new Transformers, I suspect 'sparkling' is a dialect word for him that specifically refers to a level of naivete, perhaps equivalent to 'kid' as opposed to 'child'. The stories usually involve changes to the carrier mech's physical form or some kind of added or improved power. Yes, this is a nod in the direction of things that happen in Beast Wars, whether that ever actually gets used in movie continuity or not. The stories are said to be so old that they have no physical record to back them up any more.
Blurr- An especially talkative human who doesn't appear to need to stop for breath more than once per very long paragraph reminds Ironhide of Blurr. This is all that was mentioned about him one way or the other.
Jetfire - Mentioned in passing as being a scientist.
Somewhat related:
Reference is made to both Simfur and Tyger Pax, from the prequel comic. They have only so far been described as cities you could never get on Earth because the architecture isn't advanced enough.
Ironhide's account of the causes of the Great War. Includes some discussion of the roles of the Lord and the Prime (the Lord protects, the Prime allocates; Ironhide refers to them as 'the Closed Hand and the Open'; etc.).