User blog comment:General MGD 109/Who's the strongest demon/@comment-94.245.175.209-20161007020533

1. Cain

2. Jesse (I'm not so sure about demon he is, but he very near to them and has similar strength to Lucifer, of course if the last one walks the earth)

3. Alastair (The brute of the hell. He even beat Castiel with ease!)

4. Azazel (Some sources said that he was an angel under Lucifer command who also deflect with him)

5. Lilith (First demon at all. But she seems to be scared by Castiel-like angels, some episodes mentions that she hidden from angel radars and not only that)

6. Abaddon (Well-trained demons under Cain)

7. King of Hell (If he can't get something with strength, then he'll simply find another way)

8. Samhaine (He had some powers, but far smited by Sam at very beginning, so that makes him the weakest of the list)