My own discoveries:
Abzû
Phroi Bluae FG-Y G0
The system hosts 5 water worlds of various atmospheres and sizes: two of them are in pair with other planets, another two orbit around T Tauri stars and the last one flies in triad with two class II gas giants. There are also 3 tiny gas giants with water-based life having from 7 to 23 earth masses and 3 paired brown dwarfs that are located on the farther orbit. In addition, the main body of the system is a Herbig Ae/Be star, which is an interesting object itself. According to the historic notes, in the Sumerian mythology Abzû is an ocean located deep underground the planet, which has some similarities with the system located deep in the galaxy. A more extensive research also indicates a video game from 21st century that had a similar name.
Aruna's Sanctum
Dryio Bloo SJ-Z E2224
The system contains a neutron star which is orbited only by 2 water worlds. And though WWs around neutron stars are not really rare, a system with 2 lone water worlds is something you do not usually encounter. The name refers to Aruna who was a sea and ocean god in the Hittite mythology.
Crimson Jellyfish Nebula
Hypou Briae MM-W D1-5951
A nice looking dark red nebula. Though it does not contain any special sites or systems, it lies on the way from Sagittarius to Beagle Point and resembles some kind of tiny crimson jellyfish, thus may be found interesting for taking photos nearby.
Legacy Of G. K. Gilbert
Hypuae Briae YP-F D11-2510
Planet 1 D contains several white-surfaced cavities which look like dried salt lakes. The biggest one is located at -17.25 -45.55 coordinates and can be observed from orbit during approaching. Due to the position of the planet, a visitor can usually witness some astonishing views of gas giant and another moon in the sky. Pale blue light of a neutron star also enhances the atmosphere of the place.
In addition, the planet is actually a planetoid that has some angled plains on which pilots can have fun with tricky gravity that pulls them to the mass center of the planet rather than perpendicular to the surface. Video:
Source: https://www.youtube.com/watch?v=RQRYAS3aWwY
The name refers to Grove Karl Gilbert who was a geologist of the 19th century. He also was the one who suggested naming a famous salt plain in North America after Benjamin Louis Eulalie de Bonneville.