Well that’s what I thought, but at this point the plant looks substantially different from the cucumbers and melons I have growing

Those are indeed cantaloup with yellow flowers right next to the plant in question, good eye. The plant with the slightly different leaves with the brighter veins is the one I’m wondering about. There is also a grape in the upper right of the first pic to further add to the confusion.

There’s a lot going on, sorry

It's indeed a hollyhock :)