OBJECTION! TIEFLINGS AREN'T SUCCUBI! THEY'RE AN UNRELATED TYPE OF DEMON GIRL
Maybe unrelated in the new stuff, but I know at least 3.5 and Pathfinder had tieflings as the descendants with infernal heritage (Pathfinder even specifically lists "the descendant of a Succubus"). So RAW not explicitly "unrelated".
For tagging purposes succubus would be a misstep though ww