I realize now I forgot to put this in the documentation somewhere. From R977 and up frigate build pages for all races were as such; the second page is all miscellaneous combat ships, the first follows this order:
Colony #2 * **
Star Base Constructor
Gravity Well Generator-equipped interdictor *
Dedicated mine-layer/clearer or muti-purpose light anti-fighter, mine-layer/clearer, and light combat ship *
*Not all factions have these ships
**This might be a fully fledged combat-capable, or carrier, ship that happens to have colonize.