Erebos probably counts here. He is only concerned with the enforcement of the natural order of death. He can be kind but he doesn't go out of his way to do so, nor is he overtly malevolent. I don't think Athreos has much of a defined personality, but he also seems Lawful Neutral, neither benevolent nor malevolent, simply maintaining order.
Ignoring the worse (Grand Arbiter Augustin IV) and the better (Lavinia) elements of Azorius, the Senate is Lawful Neutral as a whole. It is concerned with administration and protection of the law in order to preserve order and nominal peace, but it isn't really concerned about people's dignity or well-being.
The black heroes arguably fall here: Teysa is self-interested but not to the point of malevolence; she will work for the greater good when necessary. It's arguable that she is True Neutral but she is methodical, keeps her promises, and is respectful towards law and authority. Toshi Umezawa can be argued in different ways, but I can see him as Lawful Neutral, a man with certain binding principles and promises, selfish but not malevolent. They both veer towards True Neutral, though.
But then there was the incident with Vraska, so they must be Lawful Evil.
I'm generally aware of the concept of alignment, but it gets a little foggy figuring out how the two axes work when they are pushed together and pulled apart.
If I recall correctly, wasn't Heliod still deemed king or some form of ruler of the gods? Appointed after his creation? Came to life with this notion? Petulent yes, but if I'm correct and Theran mortals believed the leader of the pantheon was Heliod, and thus Heliod believed it with every fiber of his being, then he was being pretty lawful for a GOD.