The most notable characteristic of the delorix homeworld: Rhodo, named after their red plants, is that it's tidally locked, normally this would mean extreme temperature difference across the planet, but an active atmosphere with heavy winds manages to distribute their stars' heat enough to harbor a wide diversity of organisms.
The masaka homeworld: Igneous (I misspelled it on the image), is a very warm world named after its volcanic activity and rocks used in blacksmithing. It's notably dry throughout most its surface, save for a single large ocean on one side, a region humid enough for rain forests to naturally grow around it. Another notable characteristic is the north side temperate and arctic red desert, which gets chilly at the lowest during winter.
The colder planet of the nedal homeworld: Aurora, named after the magnetic field activity seen widely from the temperate to polar regions, is primarily surfaced with oceans and continents carpeted in blue grasslands, with pockets of forest.
I wanted the zrai homeworld: Venous, named after the rivers that many zrai populate that look vein-like from an ariel view, to have continent-sized lagoons but that would probably require planet-busting levels of volcanic activity, so I'm now opting for an ocean planet speckled in normal-sized islands and lagoons.
The smazel homeworld was blown up at the climactic end of a religious crusade centuries before they encountered the other alien nations, and since they kept no empirical records of their "sinful" planet, scientists and historians from the other alien species can only infer what it was like based on smazel physiology and their mythologies recounting what it was like, which was apparently violently volcanic and desolate.
I still don't know what kind of stars they orbit yet, and these planets may get adjustments as I gain a better understanding of geology and cosmology.