New to editing Wiktionary as of 2021, but it's been an invaluable resource for me for a long time. I'm a native English speaker from the UK, but I also speak European Spanish to an advanced level. My level in Catalan is somewhat more complex: overall I would say that my level is only intermediate, but in informal written contexts I have passed for native on multiple occasions. That isn't to say that isn't without the occasional help of a dictionary - such as this one - though, so I would say my Catalan reading and writing are...semi-advanced?