I’ve always used iPad chargers on my iPhone. People like me are probably why Apple aren’t going to include the chargers with the iPhones anymore.I thought I’d be careful as I charged my old iPhone once with my iPad charger By accident and it went funny after it. (IPhone 6)
I currently use an Anker 45w charger for my iPad Pro 12.9 and the wife’s MacBook Air, I’ve not even taken the charger out of the iPad box.