Lawful good is returning the cart to the in store area (or wherever people generally get their carts from). Or returning more than just your cart to the corals in the lot. Might return a row of carts to the store while they grab theirs from the coral.
Neutral good is gathering some carts from the lot and making sure they aren’t taking up parking spots, though not necessarily returning them to the coral or store.
Chaotic good is grabbing one of ones randomly left out there and giving it to others who are going in to the store and grabbing another one for yourself. Cart may or may not be left in the coral after, though it’s at least left where it won’t be in the way.
Lawful neutral returns their cart and maybe others if they aren’t out of the way. Might freak out on someone who doesn’t return their cart.
True neutral sometimes returns it, sometimes doesn’t, sometimes grabs a loose cart, sometimes grabs one from the store area. Overall doesn’t make things better or worse, but individual episodes can do so.
Chaotic neutral picks a random (to us, they might have their reasons) cart in the middle of a row, pulling the other carts out enough to access that cart. May or may not return those other carts to the row. May or may not push their cart towards a coral when they leave. Most likely to be seen pushing a cart while driving their car, either with the cart at the front of the car or holding it through an open window (which might not even be the usual driver’s window). I’d call Mr Bean chaotic neutral, so anything he is capable of.
Lawful evil returns the carts to the coral but stacks incompatible carts with each other or might put it in backwards. Follows the rules in a way that makes you wish they hadn’t. Might stick a tack in one of the wheels so it won’t turn properly.
Neutral evil scatters carts to cause the most inconvenience. Doesn’t just block parking spots but might block car paths or entrances and exits to the store. Might overturn their cart. Might ram it into someone’s car. Might fight employees that try to gather carts.
Chaotic evil super glues wheels so they won’t turn or glues carts to each other and in the coral or to the door. Or might take one of those carts that are tethered such that they seize the brakes from one store and leave it in another store’s lot. Or might figure out how to trigger that without the cart leaving (the other evils might also do this one). Or might just burn down the store after returning their cart to the in store area, letting any observers briefly think they had changed. Might turn the parking lot into a crash up derby and refer to pedestrians as bonus points.