Since chemistry and biology don't exist until after one point where physics is fully defined, there are lots of room for possibilities.
There could be energetic beings, inorganic, electronic (which should be differentiated from inorganic), furry, insect, other odd creatures that is intelligence but without skeletons, and plant, being that transcend beyond the dimension and realize our universe is a vector space and thus a mathematical interpretation.
Though there is also chance that they do not exist even if a certain requisites already exist.
There could be energetic beings, inorganic, electronic (which should be differentiated from inorganic), furry, insect, other odd creatures that is intelligence but without skeletons, and plant, being that transcend beyond the dimension and realize our universe is a vector space and thus a mathematical interpretation.
Though there is also chance that they do not exist even if a certain requisites already exist.