Sharks should definitely be in the bottom of Tier 4, not Tier 5! Not sure what happened there.
I feel monkeys and spiders are both really divisive. I know a ton of animal lovers that just hate monkeys. Arachnophobia is huge, but a lot of people find spiders fascinating. I think they're still on the bottom tier, but they're above all the unranked stuff like mosquitos and bedbugs. Generalized Bug, I think of as like...ants, beetles, etc.
Raccoons are tough. I agree that they're probably higher in fiction, but they also kind of are an unliked animal, even in fiction.
I consider pandas/bears and ducks/geese/penguins to be the same. Maybe shift a bit in the tier, but definitely the same tier.
I can't live forever
With my head and my heart in the clouds