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

[GreyBlack]

I agree, but I'm torn on whether he would be Lawful God vs. Neutral Good. He does the LG approach of what society expects of him...until society changes for (in his eyes) the worst even if not towards evil. Then he starts seeming more NG.

Lawful Good doesn't mean "never breaks the law." It means that you tend to align yourself with the Law and Good. A character is not an alignment, but a character can have an alignment.