Yaarel
🇮🇱 🇺🇦 He-Mage
The rules are surprisingly incomplete: there is no Ethereal creature type.
There are four Elemental Planes - Earth, Water, Air, and Fire. But "Ether" is also an element, the "fifth element", quintessence. The four elements are states of matter, while the fifth element lacks matter but is still physical, such as gravity.
The element of Ether relates to force and soul.
Thus, those creatures that are made out of Ether and inhabit the Ethereal Plane, including the Border Ethereal that overlaps the Material Plane, can make sense as the Elemental creature type.
The question relates to animism, where features of nature in the Material Plane can extend their influence across the Border Ethereal. It can be useful to classify such phenomena as the Elemental creature type for statblocks and so on.
There are four Elemental Planes - Earth, Water, Air, and Fire. But "Ether" is also an element, the "fifth element", quintessence. The four elements are states of matter, while the fifth element lacks matter but is still physical, such as gravity.
The element of Ether relates to force and soul.
Thus, those creatures that are made out of Ether and inhabit the Ethereal Plane, including the Border Ethereal that overlaps the Material Plane, can make sense as the Elemental creature type.
The question relates to animism, where features of nature in the Material Plane can extend their influence across the Border Ethereal. It can be useful to classify such phenomena as the Elemental creature type for statblocks and so on.

