Based on this help thread it looks like:

1. was listed as a plushie but can no longer be put in the plushie collection. Users who put it in their collection before the option was taken away will always have at least +1 to users who can no longer see the option. Is this intentional or an oversight? Is this because it says "plush" instead of "plushie"?
2. doesn't show up in the Item Directory when plushie is entered in "item types and uses"

Thank you to for doing all the research!