I still can't believe this is the Pucci's stand parallel of this world...
Hmm, wait.
If Johnny is the Jonathan parallel for being a "traditional hero", then is Josuke the Joseph parallel for being a somewhat derivative of that and that derivativeness is done by Josuke being a bit of a Dio-like with the "Pucci" by his side and him "invading" the Higashikata household?
Edit: And somewhat similar to Johnny and traditional hero in general, this is also a self-discovery story