I'm basically trying to find characters that can defeat shadow other than sonic because the sonic power scaling is insane.

If it's movie Shadow, then yeah, It'd be pretty even. But if we're going off of any material (including the archie comics), then Shadow would bawl on him in every respect. Then again, I wouldn't know any non-mcu feats that Thor did other than slapping Adolf Hitler (yes, that's real)

I'll just say its movie shadow because I don't know all of the versions of shadow but thank you, this fight has been on my mind for so long.