Needles & Grooves

Yup

Yes, keep them away.

Only if they smell like a beach ball. Personally, I put the record/jacket material in them in their own sleeve and that stuff back in the PVC so they are segregated and I figure any adjacent records are likewise in their own sleeves.

The only one I don't think I can do it with is Danny brown

Because it had text and the sleeves were the cover