Sorry I have to start us with the hardest one, but I think Snow would love everyone and just about everyone would love her.
I'm going to do one for the other princesses too.

he seems too aggressive...

He's my favorite prince but I don't think Snow White would like him too much.

he'd scare the crap out of her

I think she'd be really intimidated by him
If we're talking about Adam post-Beast, I don't think she'd have a problem with the guy

^That. Plus he's not much fun, not in the same way she is, and she'd probably think he needs to lighten up.

Either him of Shang. Snow White would be scared of him and make fun of his seriousness, while he would be another by her. Could go eithe way with him and Shang for me

Or Adam. He's not so romantic.

She wouldn't like how he's serious.