This is what the galaxy looked like before the Jagged Knife struck - North is the top right corner.
Post Knifing, the galaxy breaks down as follows:
Jagged Knife: 120 colonies, centered mid, west, and southwest with stragglers in the east and south. They have begun producing some beefy heavy fighters using my stolen beam tech, but are mainly focusing on upgrading their worlds and building the economy required to run such a massive empire. They are no pushovers in ground combat either, only my terror drones keep me at parity in the soldiering department.
Korath Clan: 42 colonies, centered mid-south with outlier toxic worlds west, north, and east. Lost 20 colonies to the Knife, which included the heart of their empire (even Kora II!) and the prong that bordered Korx space. They are at war with all the good races and holding their own, but do not appear to have researched invasion tech yet. Korath planets are spitting out ships like crazy, and they have many 18 attack fleets split between missiles and guns (super dominator corvettes). However, they keep suiciding these fleets into a massively fortified Torian mining starbase in their territory. Once it gets to around 1/4 hp, I'll have to send a constructor over there to steal their efforts. They are also in possession of at least three influence resources, which makes me very glad of my 100% loyalty bonus.
Torian Confederation: 46 colonies, split between east and west, with stragglers mid and northwest. Lost a full 30 worlds to the Knife, completing the split I began by taking their home area. Still the economic leader, but desperately trying to catch up militarily. They have realized that 14 ship fleets are not impressive if your ships are crappy, and are finally producing heavy fighters. My fighters now have to repair more often, but my frigates don't care. They also have figured out they are no match for my robot armies on the ground, and are building planetary defense structures everywhere. This is doubly irritating, as my preferred invasion tactic against them was to spy-bomb the target planet's morale structures, then brainwash the populace into fighting for me. Those who survived were given the honor of uploading their minds into superior Yor chassis. Not only do planetary defense structures actually work in the mod, but they give a morale bonus and cannot be disabled by spies. Damn. Fortunately for me, I have MANY robot legions.
Yor Collective: 44 colonies, centered galactic north with outliers far north, mid and northwest. Lost 23 planets to the shanking, including all my mid-galaxy Torian acquisitions. While this has seriously set back my efforts at conquest, all is not lost. I am about to clean those bug-eyed meatsacks out of my space in the northwest, and their long period of military ineptitude has given my warship crews considerable experience in tactics, strategy... and hitpoints. (some of my tiny fighters have 35-40 hp!) I have declared unending conflict with the Jagged Knife, and on my first reconquest gained something potentially empire-changing. Fear me, knifelings, for I have stolen your concept of transferable value tokens! The Yor Collective will now be constructing Trade Centers for the exchange of these value tokens in an inevitably superior manner to your crude fleshbag trading. Cue mechanical cackling (h4h4h4).
Altarian Resistance: 38 colonies, centered midwest with many scattered extreme worlds. Lost only 15 worlds to the Knife, but many of their scattered worlds are in Korath space, under siege, and slowly succumbing to Korath cultural power. Despite this, they are in a relatively strong position with their core worlds intact, solid research, and generally good relations with other races plus a treaty with the Drengin of all people.
Iconian Refuge: 23 colonies, centered mid-south with a some outliers mid, south, and southwest. Expansion sharply curtailed by the Jagged Knife, who took all but two of their worlds bordering the Korx and all their eastern extreme worlds. Technically at war with the Korath, but the few weak fleets they have sent have been quickly swatted. They are lucky the Korath hate starbases with an unholy passion. If they manage to culturally absorb the several Thalan worlds in their influence they may become a more major player.
Dominion of Korx: 14 colonies, centered southwest. Despite the Jagged Knife homeworld being Korx II, only lost 6 worlds while everyone near them was mugged. They are solidly neutral super diplomats, and everyone loves the Korx (and Korx-brand cola!). Yor scouts have reported sightings of Korx troop transports, and if they take advantage of the windfall of undefended Jagged Knife planets surrounding them they could come out substantially stronger than they were.
Arcean Empire: 16 colonies, centered galactic west. Lost a good 7 world chunk of their eastern border with the Korx to the Jagged Knife. Do not appear to have built a military yet, but they also don't seem to need one. From the limited information available from Yor data tapping, they have decent economic and productive capability but would need to go to war to become a major power.
Drengin Empire: 14 colonies, galactic far west. Lost 7 worlds, a full third of their empire, to the thugs. Oddly, they do not yet have a military and appear to be on surprisingly good terms with the rest of the galaxy, including Altarian and Thalan treaties. Not much else going on there, I've only just gotten a scout over to that part of the galaxy.
Thalan Empire: 12 colonies, galactic far south with outliers to the north in Iconian space. The Knife picked off the few outlying worlds they had that bordered the Korx, along with an entire three planet system in their core cluster. I have no idea how they managed that. The Thalans' only hope is that the Korath turn their attention to the Iconians soon so they can scavenge some of the scraps before the Iconians absorb them. However, with no military and meager economic power this seems unlikely.
The Meklar: 10 colonies, galactic mid east. This not-so-minor minor was the recipient of all Torian technology relatively recently. As they are good-aligned, they are at war with the Korath, but they are not in any real danger because they are in the middle of Torian territory. Meklar fighter craft are half decent, and they have a good number of troop transports - they may end up picking off some of the more isolated Korath worlds.
The Silicoid: 8 colonies, scattered mid galaxy. These little rock bastards snatched a few too many barren worlds from under the probes of Yor colony ships. There will be a reckoning as soon as I have sufficient robot legions - and they have yet to research weapons, unaware of the impending metal fury. Also, doom - lots of doom.
The Elerian: 5 colonies, galactic southwest. Also stole all the Torian's tech - those water schools must not be very secure. Located slightly south between the Korx and Arceans, they have the same opportunity as the Korx to pick off undefended Knife worlds. I suspect they are less likely to do so, however. Despite their small size they are an unappealing target due to their technological prowess.
The Bulrathi: 7 colonies, scattered galactic east. This minor holds many of the high grav worlds in the east, and has no weapons yet. A potential target of opportunity, but low priority.
The Drath Legion: 4 colonies, galactic mid east. Lost two of their already scarce worlds to the Jagged Knife. Choked out of early expansion by the Bulrathi and Meklar, the few outlying colonies they managed to secure were quickly surrounded and culturally absorbed by the Torians. They are now evil due to an event, and despite their having the worst position in the game (including minors!) I think I will let them live for a while to see if they can bootstrap back into it.
The Alkari and Tolmekian Federation: conquered by the Yor Collective, who only communicate by laser (not the intelligible way).
congrats if you made it through all that
TL,DR: pretty pictures of what the galaxy looks like afterwards - so many orange dots!