>>717210856In the AI image? None. In real practice they are basically polar opposites.
There is a continuum from cappuccino>latte>flat white. A cappuccino is espresso and then foamed milk maxxing with minimal steamed milk. A latte is true neutral amount of steamed milk and a decent amount of foamed milk. A flat white is maxxed steamed milk and minimal to none foamed milk. This also corresponds to their weight at the same volume. A cappuccino weighs the lightest, then the latte, then the flat white is heavier than a latte.
People who order flat whites are usually clueless motherfuckers who equate weight to amount of caffeine they are consuming. Their origin story usually involves some shitty barista making a borderline capp out of an ordered latte and they ended up with "half" a drink when the large air bubbles collapsed.
Real ones drink cortados. If you want a latte amount of steamed milk skip the espresso and just get a steamed milk and espresso separate. You'll enjoy both more.