There are the "real" "outer" "gods", like the Scarlet Rot or the Formless Mother (or the Dark Moon, or maybe Unalloyed Gold?), and then there are various "demigods" that are associated with them (Malenia, Mohg, Ranni, Miquella) and act as their avatars. Kind of. Possibly.
Also the Frenzied Flame which seeks out Tarnished to be its avatars, for some reason. And the Fell Flame of the snow giants. And the Death God which seems to have Godwyn's bloated corpse as its avatar. And, of course, the Greater Will + Erdtree + Marika + Radagon + Elden Beast + Two Fingers shebang.
Really, they should have called these "Powers" and "Principalities", or something of the sort.