tl,dr, succubus comes from latin to "lie under" and incubus comes from to "lie in" and is from the same root word as incubate and mostly I just didn't like the incubus context on him, esp given his kinda fluid gender presentation. I like the vibes of succubus better but if you want a more detailed explanation here's a public patreon post where I wrote about why I went that way :)
https://www.patreon.com/posts/63334741