Peter Parker, Dr. Doom, Bruce Banner etc. The list is pretty much endless. So yeah, it is common to make the names phonetically pleasing.
In regards to female characters, of course it was cultural, I was not debating that. They were trying to sell comics, so I am pretty sure they would generally do things that fit with cultural norms.
As I said, I would be curious as to the differences in the names of subordinate characters, both male and female, as opposed to their front line counterparts. Recognizing that historically there are far fewer female characters that took center stage.