Homer's Iliad is one of the oldest known works of Western literature & was written between 1260 - 1180 BC.
There was only Medusa, in The Iliad.
It wasn't until 700 BC that the more modern depiction of there being 3 gorgon sisters, Stheno, Eurylae & Medusa.
Her two sisters are immortal, Medusa is the only mortal of the 3 Gorgon sisters.
At this point they also changed to be sea monsters, the off-spring of sea deities, Keto & Phorcys.
Up to this point, they had boar tusks, wings, scaled skin and huge claws. They had also been depicted as lionesses & sphinx.
It wasn't until the Roman retelling of the stories, by Ovid, around 8 AD that they got snakes for hair.
As you say, lots of changes made over time!!
If you want to get it on, with a Gorgon, then
Sorcerer is your game!
There's, sadly, a bit of an obvious problem with this girl, which kinda conflicts with most of our pervy intentions.
I can go with wings, horns, purple skin, any of that.
But how do you fuck a girl who's a snake from the waist down?
It's like the old thing with mermaids & which half should be fish!