Apple has been using a common charger from the first iPhone on, there never was an iPhone charger that was not USB. Back the other brands came with a different

Apple has been using a common charger from the first iPhone on, there never was an iPhone charger that was not USB. Back the other brands came with a different, proprietary charger with a fixed cable for each model. Apple changed the cable once from the wide and weird dock-connector to the small and sturdy lightning port. That happened before USB-C was even invented. As a long time Apple customer I‘m quite happy with their consistency here.