I've looked around but I haven't been able to find anything about it so ill ask here
I've been wondering about the ships of the different epochs, as in what sort of equipment (shields if any, drives, weapons) did they field in each epoch as well as their design focus across the epochs
I would also like to know when an what happened in each epoch
I'll give you the cut-and-dry.
There's three epochs. Mastery, Core, and Expansion.
The Mastery Epoch was part of our initial expansion and 'mastery' of our local cluster and solar system, slowly becoming accustomed to being a starfaring race. Ships of this era include the Hound, Lasher, Enforcer, Onslaught, and all other manner of vessels. The general design focus was armour, and kinetic weapons, with minimal speed and shields.
The Core epoch was when the general expansion of humanity really kicked in, where we started hunting down habitable planets across the stars, and created what amounts to be the 'core' of the Domain of Man. Large advances in engine and shield technology, as well as considerable pioneering in energy technology resulted in hybridized ships such as the Sunder, Hammerhead, Brawler, Falcon, Eagle, Gemini, And other similar craft. The focus was on middling armour, capable shields, and a robust mixed loadout of energy, ballistic and missile weapons. This was also when strike craft became popularized, with the Broadsword, Warthog, Thunder, and Gladius fighter craft were fielded.
The Expansion epoch was when humanity's technological prowess allowed them to colonize uninhabitable worlds for the first time, allowing barren sectors to be turned into veritable paradises. The Domain likely set out systematically from the core worlds, turning vast swaths of space into breadbaskets, en masse, and then transplanting large populations into the project to assist with the development. The focus of the late-tech craft became speed, shielding, energy weapons, flux efficiency, and strike craft. Advanced fightercraft like the wasp, xyphos, and similar became widespread, and the medusa destroyer, wolf frigate, aurora cruiser were some of the earlier designs, with phase frigates and cruisers coming in much later.