The problem with the whole traditional elf idea is that it is pretty hard to define. Let's say we go back to the source of modern elves, Tolkien; sure, you find the stereotypical blondish, forest-dwelling, bow-using elves there, but they are a pretty small and, when talking about the setting as a whole, fairly irrelevant group, with the arguably most plot-important group of elves being distinguished by things like their preference for using swords, usually having black or dark brown hair, living in cities built either aboveground or underground, being skilled in arts like mining and crafting, creating extremely valuable bling, getting killed for said bling, murdering other elves because they dared to touch their bling, etc., aka stuff that doesn't really fit the stereotypical mental image of the traditional elf as a forest-dwelling blonde hippie with a bow.
To use another example, D&D. I don't really know how bad the situation is when it comes to elves these days, but back in the day there was an elf subrace for basically every single potential environment: city elves, forest elves, underground elves, winged elves, evil underground elves, evil underground elves but actually good, underwater elves, arctic elves, etc. If you start to include third-party stuff, it gets even worse. I am looking at you, Bastards and Bloodlines, and your elf × eagle, elf × unicorn, and elf × fucking sapient tree crossbreeds.
