If it's really getting gasoline in the oil, I'd be more concerned about the tendency of the gas to thin the oil and diminish its lubricating ability than I would be about the fill level. Mine was a tad over the full mark at 300 miles, and I assume it was like that from the dealer.
If you're in South Carolina, I don't imagine you've been subjected to the kind of cold temperatures that often cause people in colder climates to experience hard starting, engine flooding, etc, so that probably doesn't explain your situation. You haven't told us how your gas mileage is faring though: a dripping fuel injector might cause this symptom over time. You also haven't told us where you purchase fuel. Some of the pricier brands put detergents in their fuel that can help to avoid problems with fuel injectors. The owners manual recommends that you purchase gas from one of the brands listed on toptiergas.com, but if I had any concerns that the fuel system might be needing some cleaning, I'd put a full tank of Chevron in it.
If you're at 4400 miles and you haven't had an oil change yet, you might want to have one. Yes, the manual says you can go to 7500 unless you are in a "severe usage" situation, in which case you should change it at 3750 miles. And then they go to describe just about everything I think of as "normal" as their definition of "severe usage".
After your oil change, check your oil cold on level ground before the engine has run, and wipe the stick and reinsert it before you take a definitive reading. Whoever changes your oil is likely to overfill it slightly. On cars I've had previously, having the oil slightly over full didn't seem to be a problem, but having it contaminated with water or gas is almost always a problem.
2018 Niro PHEV Gravity Blue