Since "succubus" is trending, I'm going to use this opportunity to say that one of the smartest small things that D&D 5E did was making succubi their own class of lawful neutral fiends instead of being devils or demons.

Pre-4E, succubi/incubi were chaotic evil demons. Demons are generally monstrous spirits of death and destruction, in comparison to the lawful evil devils, who fulfill the tempter/deceiver ("But not technically lying!") category.

Essentially, devils want to overthrow the gods to rule all, and demons want to overthrow the gods to destroy all.

The 4E devs thought that the MO and aesthetic of succubi/incubi fit better on the devil side of the ideological divide, so reclassified them.

Like any change that 4E made for any reason, this was controversial. Buuuut like most of the changes they made to the cosmology, it made too much sense. Once you point out the weirdness of succubi as creatures of elemental destruction, it can't be unseen.

But at the same time, they don't *exactly* fit in the devil side. They're more prone to outright lying. They certainly tempt people, but not in the same sense, and usually they are tempting them towards destruction.

So the 5E devs decided the succubi are their own thing, a family of fiend that can work towards devilish or demonic ends as they play their own games. A compromise between the previous two versions.

People who hate on 4E often assert that 5E threw out everything from it, which is laughably wrong, but people who hate on 4E by and large never bothered to understand it in the first place so I'm not sure how they'd recognize something from it.