Hello Anon
1, 2, 4, 5 and 6 contain "dead" metaphors (i.e. phrases which incorporate metaphors that are so familiar that no one thinks of them as metaphors any more).
3 only contains a metaphor if the raven is unreal.
7 is a doubtful case. "Tossed" may be a dead metaphor; or it may be literal.
All the best,
MrP
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Edit: By unreal, I mean "if there isn't a real raven".