A Jupiter and a Neptune will always have an atmosphere, so that's why Atmosphere doesn't pop up when they are generated
(>90 K) frigid (90 K) cold (170 K) cool (250 K) temperate (330 K) warm (500 K) hot (1000 K) Scorched Ferria - metals (iron, nickel) and siderophilic elements such as sulfur. The boundary is > 50% by mass. Carbonia - carbon and its compounds like carbides, also CO and methane. The boundary is > 25% by mass. Aquaria - water in the form of exotic ices and liquid (but not vapor or supercritical fluid - that is a minineptune). The boundary is > 25% by mass. Terra - not ferria, not carbonia and not aqauria. The primary component is silicates (rocks). Jupiter - hydrogen and helium. The boundary is > 25% by mass. Neptune - not any of the previous classes. Typically, H/He is less than 25%; other substances are water/ammonia/methane and a rocky core. An aquaria with a supercritical vapor atmosphere is classified as a minineptune/subneptune.