I have a question about radicals. I know WaniKani uses radicals too, but I’m referring to the unique radical that is assigned to every Kanji. Take the Kanji 州, for example. In some places (websites) I see the main radical listed as 川, but in other places (apps on my phone) I see the main radical listed as the vertical stroke “⼁”.
Which one is correct? Where do you go when you look for radical information?
Here are the main places I check, in no particular order: