the cat ecumenopolis

Hybrids - The original species from Caymet, bipedal anthropoids. Often depicted as specific animals, though these animals have no real-world counterpart.

Elves - A genetically engineered species that is meant to be the exact average of every type of Hybrid. Strangely lacking in fur except for on the top of the head.

Other

Daemons - Non-Sentient or Sentient AI that attempts to mimic another species or individuals, highly regulated in all spaces.

Aberrations - Born from Nihil
Celestials - born from Vitae

Aliens

Druids

The raven-like species from Indugrove-A, being around 3 meters tall on average, with ~2/3 of it being their lanky legs. the rest is mostly black feathers, and around 10-30 yellowish orange eyes. they usually distinguish eachother by making a specific, individual-based sound rather than immediate looks, however each one is in their own way unique.

Their technology is very utilitarian, having very little safety and decor other than that which is strictly necessary, or on structures such as embassies or in locations where other species often visit.
as such Druids originally functioned as a planet-wide authoritarian state, and nearly every only-Druid planet follows suit.

Their species is very fast at being able to evolve, taking only a few days to be able to technically have a child, but upwards of a few years before gaining any sentience and real intelligence, during which time they are placed into factories and mines due to the lack of schooling that can be given.
Their morals are survival of the fittest based, having done eugenics to make their people smarter, better built for different purposes, and voiceboxes and brains capable of replicating most sounds and speech (including human and potentially some Celestial speech).
Druids are Herbivorous, with a near unanimous agreement of their people agreeing that meat is too much effort to try create and consume.
Druids are hermaphrodite, having the capability of both female and male reproduction.

Druids as a species excel at RND and adaption to new locations, as their morals are far more relaxed than all other species.
<An example of this includes the critical research done on Nihil and Vitae, which included active sacrifices of "technically not fully sentient" Druids. This has lead to severe backlash on the companies involved, though they continue regardless>

Druids are often the backbone of a beginning society, able to adapt to a planet, do hard labour and research it in three different stages with few downsides.
Said downsides are mainly that Druids are exceptionally bad at understanding why their morals are "bad", with most choosing to ignore the fact and do it anyway; -though most understand not to do research on other species-.

String

The skinwalkers from Lotus-C II, consisting of an amorphous mass of gray 'drones'. When connected together in a line these drones act as a 'brain' which can do basic spatial positioning and observation, waiting for a potential host to arrive. The String are not sentient, with no connection to Ignum, and without a host to process information, can sit unmoving in a pile for an unknown amount of time.

Upon contact with another living organism or, occasionally a non-living object, the String will begin to disconnect and the individual drones will fly around in a seemingly random pattern, attempting to be breathed in, consumed or otherwise forcefully enter the host body. Once inside, it will begin deconstructing the creature by using their incredibly sharp, singular claw, sometimes taking up to a week before it is 'satisfied'

Once the host has been deconstructed enough, which is fully dependant on how many similar previous hosts the String has encountered. The drones will then link up and transform the flesh, bones, wires or other mass it has available to reconstruct a copy of the host's body.
This copy is nearly indistinguishable from the original, other than the lack of sentience (connection to Ignum), incapable of a connection to Viw, the host body will not age, and can repair itself far faster than normal.

The String may stay in its' host for several decades if not longer, the hosts' brain acting as normal, despite the lack of sentience.
The String reproduce slowly while inside a host, turning consumed material into more of itself, and leaving the body in coughs, sneezes, and even occasionally while exhaling.

The theory that the String was designed as a bioweapon is currently the leading theory, with the laboratory on Lotus-B having been destroyed a few weeks before the first String was reported on Lotus-C II.

Zmeu

The lizard-like species from Zharang-A, standing slightly above two meters tall on average, with a range of different colours of scale and eye colour. They are facultatively bipedal, with a short muzzle, two thumbs and a tympanum.

Their technology is often very decorative and over the top, as their species prioritized culture and person-level relations. They only went to space after a Caymet Sleeper landed on their planet, showing them a reason to expand outward.

They are a surprisingly peaceful and kind race, despite being omnivorous. Their culture is at its core built around a dislike of violence. Despite this, they are a strangely remonstratable species, and have been known to be highly involved in all fields of galactic politics.

Adaptors

The vaguely fungal and insectoid species from Karalax, their bodies are totally amorphous, being able to constantly change how their bodies look and work. Their form is made up of three parts, being a light brown flesh, orange chitin, and fluoresce yellow-green bones <due to their diet, which includes plants with a high level of Tetracycline>.

The first sighting of an Adaptor was when they attempted the destruction and presumed colonisation of Moss, with over half of the 11.3 billion population dying within two weeks due to constant orbital bombardment.

Adaptors are only capable of Viw-based communication with eachother, preventing any real interspecific communication, as they are totally incapable of communicating through other means.

Adaptors are a technologically capable species, being almost entirely diesel-based. It is believed that Karalax is rich in liquid hydrocarbons, with little sunlight or other useful materials, causing them to need to expand outward.

Adaptors are a common enemy by all but very few organisations and cults, causing a surprisingly large alliance between most spacefaring factions due to the threat they pose.