Thanks so much! I honestly didn't expect to dive into reinterpreting the Greco-Roman Pantheon as much as I have, but it has been fun. The way I have it laid out for what's next, it's Persephone, Hades, Leto, Hestia and 'conclude' the roster with Zeus and Poseidon, but knowing there are a few favourites outside the main 12 Olympians (Hecate) and I am technically including the Underworld gods in the roster, I could do one or two exceptions (not all of them obviously - even Hesiod's Theogony names only 50 of the thousands of nymphs in greek mythos).
Off the top of my head (by which I mean after reading a few academic texts over the last few months), Prometheus to me would be more of an anthropomorphic aspect of larger nature, since most Titans were born from larger concepts before getting godly specific (e.g Gaia (Earth) > Cronus (Time, Agriculture, Generations) > Zeus (Thunder & Lightning, Law & Order, Family & Hospitality). There's also the definition of Titan as 'earth born' which references to chthonic ("beneath the earth"). Since Prometheus is most famous for his creation of humanity out of clay, and giving man fire for which he is punished by being tied to a mountain and having his liver eaten by an eagle every day, I imagine him to be a huge homunculus humanoid made of out a red clay cliffside. Maybe he made humanity out of his own flesh, hence why he is fond of them, clay is also easily mouldable - he can remould his liver back in place and heal, and since clay is hardened in fire the symbolism of his setting his fate solid by betraying the gods and giving this gift away that he knows he'll be punished for is very good. Also maybe his form is formed into a coastal cliffside, where more-so seabirds as well as eagles peck at his body and maybe even nest in there; there are also links to Prometheus and the Babylonian ocean/water god Enki - he created humans out of clay and cared deeply for them too.
But then again, it's just how I see it and it's subject to change the more I research. Prometheus may be made, maybe he won't - I'm happy to see other people have their interpretations. :)