Man, this takes me back. When 'Arcane' exploded onto the scene, that Enzo/Lila dynamic was a lightning rod for the fic community. For the best ones, I'd honestly skip the bigger, general platforms and head straight to dedicated 'Arcane' spaces. The subreddit's weekly fic rec threads are a goldmine—they're curated by people who genuinely care about the character dynamics and writing quality, not just kudos counts. There's an ongoing collaborative Google Doc floating around Discord that categorizes stories by themes, from protective bodyguard Enzo to morally grey Lila manipulating him. My favorite right now is a piece called 'Silversmith's Gambit' on AO3. It's less about the typical dominance and more about weaponized vulnerability, which feels fresh for the pairing.
Archive of Our Own is, as always, the powerhouse, but you have to know how to search it. Filter by the relationship tag 'Enzo/Lila (Arcane)', then sort by 'Kudos' or 'Comments' to see what's resonated. But don't ignore sorting by 'Date Updated'—some of the most thoughtful ongoing fics are buried under older, more popular ones. Bookmarking writers you like is crucial, as many will write multiple stories for the same pairing. Tumblr's still weirdly relevant for this, too; authors often post snippets and link to their full works there, creating a more personal connection than just scrolling through a tag.