Reading T. Kingfisher/Ursula Vernon's Saint of Steel/Clocktaur Wars books one fascinating thing about the worldbuilding is that the basic decency and chivalry of paladins seems to supersede the various moralities of the different gods.
A paladin is a weapon in a god's hands, but a god that would use them for anything but defending the weak doesn't call paladins. You'd think the Hanged Mother - her purview seems to be destroying heretics - would love to have a cadre of holy warriors at her desposal, but no. The Dreaming God uses them exclusively against demons, which is the most paladinly thing to use your paladins for.
The Saint of Steel used them against humans but, while one of the brighter paladins does question the morality of having submitted entirely to a god's judgement on who needs to die, he seems to have used them entirely in situations that would have been massacres if a bunch of beserker paladins hadn't been aimed at the side about to do the massacring. The Saint of Steel is refered to as a war god, so there's a possibility that he was prayed to by soldiers in more normal armies, but in situations where there was no obvious right and wrong he kept his paladins out of it.
I have the impression that the Forge God is a pretty decent person, and him having paladins seems to go with that. He's a god of craftsmanship, he doesn't really need to have holy warriors under his command (and since they entered his ranks as blacksmiths they mostly don't want to be holy warriors either) but sometimes people need to be protected by a big guy with a hammer. It feels like the same kind of thing as the time he moved one of his priests to serving the White Rat because a particular temple desperately needed an architect to help the homeless.
Not all the gods that are decent have paladins - the Rat doesn't - and the process of making paladins seems a little brutal in itself, shaping thinking beings into perfect weapons in your hands. If nothing else brushing up against divinity like that seems to leave them with a perpetual anxiety about not being good enough (everyone who has to deal with them has opinions about goddamn paladins and their goddamn guilt complexes). But we definitely never see a paladin used for evil.
