I don't know. You'd have to ask a Sufi. Many of them are still around, although they've been marginalized by Islamism (aka radical political Islam).
Now that I have you in a self-critical mode (surprisingly enough, that's not a mode you non-selfers seem very comfortable with...), let me point out that you may chose another term than "non-dual". It's a negative concept that means very little, like if I defined myself as "non-mystic"... It would tell you little about what I actually embrace. From what you told me, you're beyond 2 and beyond 1.... and probably also beyond 3, 4, 5, 6, and beyond 0 too! So don't get fixated on poor number 2.