Tanjiro Kamado is about as close as you can get to Lawful Good not Lawful Stupid

[Hail Tempus]

Cap is explicitly libertarian in the MCU. Opposed to enforced govt control of his actions. That actually screams CG to me. He is constantly, explicitly concerned with freedom of the individual.

Tony is NG, does whatever he thinks is best in the moment, whether its telling the Senate to blow off, or giving in to the Sokovia Accords.

Vision is the LG one, concerned with equations leading to abstract generalized catastrophe and holding to Cap's actions as a guide for himself. He cares about community and the concepts thereof, which shows in how he tries to help Scarlet Witch.

Cap has no issues living in a society governed by the rule of law. He has no instinct to tear the system down if the system is just and fair.

Tony isn’t particularly good. He occasionally does good things, but his primary interest is preserving himself and the people he loves.

And Vision, well, he’s a self-centered, controlling boyfriend. He doesn’t try to help Wanda, and he has no interest in her independence or agency. He basically locks her up against her will in Civil War. He’s incredibly powerful and forces her to do what he wants, against her wishes. Vision is lawful neutral, at best.